Jwt Attack
Monthly
Cryptographic signature verification bypass in Northern.tech Mender Client 5 (before 5.0.4) allows unauthenticated remote attackers to circumvent JWT-based authentication controls. Tagged as both an Authentication Bypass and a JWT Attack, this CWE-347 flaw means the client fails to properly validate cryptographic signatures on tokens, potentially enabling unauthorized access to protected functionality or data. No public exploit code has been identified at time of analysis, and the low EPSS score of 0.02% (5th percentile) suggests exploitation is not currently widespread.
Arbitrary root code execution in Phoenix Contact PLCnext Control devices (all firmware before 2026.0.3) is reachable by an authenticated low-privileged Engineer user who installs APP packages from the PLCnext Store through the Web-based Management (WBM) interface. Because the device never verifies the integrity or signature of the downloaded app (CWE-347, tagged JWT Attack), a tampered package runs as root and can compromise the integrity and availability of the controller. No public exploit is identified at time of analysis and EPSS is low (0.06%, 18th percentile), but the flaw is network-reachable with low attack complexity and a vendor patch (2026.0.3) is available.
Improper verification of cryptographic signature in the Radeon RGB tool could allow a malicious file placed in the installation directory to be run with elevated privileges potentially leading to. Rated high severity (CVSS 7.0), this vulnerability is low attack complexity. No vendor patch available.
Improper cryptographic signature verification in Dolibarr ERP CRM up to version 23.0.2 allows remote attackers to bypass signature validation in the Online Signature Module, potentially forging or manipulating signed transactions. The vulnerability affects the dol_verifyHash function and has been publicly disclosed with exploit code available, though exploitation requires high technical complexity and is not confirmed as actively exploited in production environments.
Cryptographic signature verification bypass in Elastic Package Registry versions 0.1.0 through 1.37.0 allows an adversary-in-the-middle, or an attacker with influence over a self-hosted registry's served content, to substitute tampered packages that are accepted without triggering integrity check failures. The flaw (CWE-347) undermines supply-chain integrity for organizations running self-hosted registry instances. No active exploitation is confirmed (SSVC: exploitation none; EPSS 0.02%), but the high integrity impact and zero-privilege-required vector make patching to 1.38.0 a priority for self-hosted deployments.
Improper verification of cryptographic signatures in Cesanta Mongoose versions up to 7.20 allows remote attackers to bypass GCM authentication tag validation in the mg_aes_gcm_decrypt function. The vulnerability has high attack complexity and requires no user interaction, but provides only integrity impact (not confidentiality or availability). Publicly available exploit code exists, and vendor has released patched version 7.21.
The Nimiq staking contract accepts UpdateValidator transactions that omit proof-of-knowledge validation when updating voting keys, enabling rogue-key attacks against BLS signature aggregation used in Tendermint block justification. An attacker who can predict the next epoch's validator set could forge quorum-appearing block justifications with a single signature. Exploitation is constrained by the requirement to predict future validator set composition via VRF, making real-world attacks unlikely despite the critical cryptographic impact. Vendor-released patch v1.3.0 addresses the vulnerability.
OpenClaw 2026.3.22 through 2026.3.30 contain a signature verification bypass in the Nostr direct message (DM) ingress handler that processes pairing challenges before validating event signatures. Remote unauthenticated attackers can send forged DMs to create bogus pending pairing entries, exhaust shared pairing capacity, and trigger unbounded relay and logging work on the Nostr channel, causing denial of service. No public exploit code or active exploitation has been confirmed; a vendor patch is available in version 2026.3.31 and later.
Authentication bypass in Siemens SINEC NMS versions prior to V4.0 SP3 with UMC allows unauthenticated remote attackers to gain unauthorized access due to insufficient user identity validation in the UMC component (CWE-347: Improper Verification of Cryptographic Signature). The vulnerability enables network-based attacks with low complexity requiring no user interaction (CVSS 7.3, AV:N/AC:L/PR:N/UI:N), granting partial access to confidentiality, integrity, and availability. ZDI tracking ID CAN-27564 suggests coordinated disclosure. No active exploitation (CISA KEV) or public exploit code confirmed at time of analysis, though JWT-related authentication bypasses are well-understood attack primitives.
LightRAG API authentication can be bypassed via JWT algorithm confusion attack, where an attacker forges tokens by specifying 'alg': 'none' in the JWT header to impersonate any user including administrators. The vulnerability exists in the validate_token() method in lightrag/api/auth.py (line 128), which accepts the unsigned 'none' algorithm despite not explicitly permitting it, allowing unauthenticated remote attackers to gain unauthorized access to protected resources. Publicly available proof-of-concept code demonstrates the attack; vendor has released a patch addressing the root cause of improper algorithm validation.
Denial of service in rust-rpm-sequoia allows local attackers to crash RPM signature verification by submitting specially crafted RPM files that trigger unhandled errors in OpenPGP parsing, preventing legitimate package management operations. CVSS 4.0 (low severity), local attack vector, non-authenticating. No public exploit code or active exploitation confirmed.
Botan cryptography library versions 3.0.0 through 3.10.x fail to verify OCSP response signatures during X.509 certificate path validation, allowing attackers to forge certificate status responses and potentially bypass revocation checks. This integrity bypass affects any application using Botan for TLS or certificate validation and requires network positioning but not authentication. The vulnerability was patched in version 3.11.0.
A downgrade vulnerability affecting Intel-based Mac computers allows malicious applications to bypass code-signing restrictions and access user-sensitive data. The vulnerability impacts macOS Sequoia (versions before 15.7.5), macOS Sonoma (versions before 14.8.5), macOS Tahoe (versions before 26.3 and 26.4), and affects all Intel-based Mac systems running vulnerable versions. An attacker can craft an application that exploits insufficient code-signing validation to downgrade security protections and exfiltrate sensitive user information.
PuTTY versions up to 0.83 contain a weak authentication vulnerability in the Ed25519 signature verification function (eddsa_verify in crypto/ecc-ssh.c) that allows remote attackers to potentially forge or manipulate digital signatures due to improper validation of Ed25519 signature components. While a public proof-of-concept exploit exists and the vulnerability affects signature verification, the real-world impact remains unproven, with CVSS 3.7 (low severity) and EPSS probability indicating exploitation is difficult and requires high complexity. The vendor (PuTTY developers) has already released a patch addressing this issue.
A cryptographic signature verification flaw exists in tinyssh's Ed25519 signature handler (crypto_sign_ed25519_tinyssh.c) that allows improper validation of signatures, potentially enabling an attacker to forge or bypass signature checks. Affected versions of janmojzis tinyssh up to 20250501 are impacted, with the vulnerability requiring local execution and high attack complexity. A public exploit has been disclosed, and vendor patches are available in version 20260301.
A security vulnerability in HCL AION (CVSS 4.8). Remediation should follow standard vulnerability management procedures.
Galaxy Store prior to version 4.6.03.8 contains an improper cryptographic signature verification vulnerability that allows a local attacker to install arbitrary applications without proper authorization. An attacker with physical or local access to a device can bypass the signature validation mechanism, enabling installation of malicious or unauthorized apps. While the CVSS score of 5.9 is moderate, the integrity impact is high, making this a meaningful threat to device security and app ecosystem integrity.
Smart Switch prior to version 3.7.69.15 contains an improper cryptographic signature verification vulnerability that allows remote attackers to bypass authentication mechanisms. The vulnerability has a CVSS score of 5.3 with network-based attack vector and low complexity, requiring only user interaction. While no public exploit or KEV status has been confirmed, the authentication bypass capability presents a moderate risk for unauthorized access to affected devices.
This vulnerability involves improper cryptographic signature verification in the Font Settings component of Samsung devices prior to the March 2026 Security Update Release 1. A physical attacker can bypass signature validation to install custom fonts, potentially leading to integrity compromise of system font resources. While the CVSS score is moderate at 5.1, the attack requires physical access and user interaction, limiting real-world exploitation frequency.
A flaw was found in Keycloak’s WebAuthn registration component. [CVSS 3.1 LOW]
Improper Verification of Cryptographic Signature vulnerability in liuyueyi quick-media (plugins/svg-plugin/batik-codec-fix/src/main/java/org/apache/batik/ext/awt/image/codec/util modules). This vulnerability is associated with program files SeekableOutputStream.Java.
Improper verification of cryptographic signatures in Adobe Acrobat Reader versions up to 24.001.30264, 20.005.30803, and 25.001.20982 allows local attackers to bypass cryptographic protections and gain limited unauthorized write access to PDF documents. The vulnerability requires user interaction with a malicious or crafted PDF containing an improperly signed element. With a CVSS score of 3.3 and local attack vector, this represents a low-severity security feature bypass affecting document integrity verification.
Improper verification of cryptographic signatures in Adobe Acrobat Reader and Acrobat DC versions up to 24.001.30273, 25.001.20982, and 20.005.30803 allows local attackers to bypass security features and gain limited unauthorized write access to PDF documents. Exploitation requires user interaction with a malicious or specially crafted cryptographic signature embedded in a PDF file. No active exploitation has been confirmed at the time of analysis.
Authentication bypass in Fortinet FortiWeb 8.0.0, 7.6.0-7.6.4, and 7.4.0-7.4.9 allows unauthenticated remote attackers to circumvent FortiCloud SSO login by sending a crafted SAML response message. The flaw stems from improper cryptographic signature verification (CWE-347), enabling forgery of authentication assertions. No public exploit identified at time of analysis, EPSS sits at 0.26% (50th percentile), and the issue is not currently listed in CISA KEV, though Fortinet products have historically been high-value targets.
auth0/node-jws is a JSON Web Signature implementation for Node.js. In versions 3.2.2 and earlier and version 4.0.0, auth0/node-jws has an improper signature verification vulnerability when using the HS256 algorithm under specific conditions. Applications are affected when they use the jws.createVerify() function for HMAC algorithms and use user-provided data from the JSON Web Signature protected header or payload in HMAC secret lookup routines, which can allow attackers to bypass signature verification. This issue has been patched in versions 3.2.3 and 4.0.1.
XML-Sig versions 0.27 through 0.67 for Perl incorrectly validates XML files if signatures are omitted. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
GoSign Desktop versions 2.4.0 and earlier use an unsigned update manifest for distributing application updates. Rated high severity (CVSS 7.0), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Improper verification of cryptographic signature in the installer for Zoom Workplace VDI Client for Windows may allow an authenticated user to conduct an escalation of privilege via local access. Rated high severity (CVSS 7.5). No vendor patch available.
Evervault is a payment security solution. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
In JetBrains ReSharper before 2025.2.4 missing signature verification in DPA Collector allows local privilege escalation. Rated high severity (CVSS 8.4), this vulnerability is low attack complexity. No vendor patch available.
Improper authentication in the API authentication middleware of HCL DevOps Loop allows authentication tokens to be accepted without proper validation of their expiration and cryptographic signature. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X12STW . Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X13SEM-F . Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Linkr is a lightweight file delivery system that downloads files from a webserver. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.
E3 Site Supervisor Control (firmware version < 2.31F01) firmware upgrade packages are unsigned. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
An insufficiently secured internal function allows session generation for arbitrary users. Rated high severity (CVSS 8.8). No vendor patch available.
gnark is a zero-knowledge proof system framework. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A potential vulnerability was reported in the Lenovo 510 FHD and Performance FHD web cameras that could allow an attacker with physical access to write arbitrary firmware updates to the device over a. Rated high severity (CVSS 7.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in Mendix SAML (Mendix 10.12 compatible) (All versions < V4.0.3), Mendix SAML (Mendix 10.21 compatible) (All versions < V4.1.2), Mendix SAML (Mendix 9.24. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
It was discovered that uscan, a tool to scan/watch upstream sources for new releases of software, included in devscripts (a collection of scripts to make the life of a Debian Package maintainer. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in Building X - Security Manager Edge Controller (ACC-AP) (All versions). Rated medium severity (CVSS 5.9), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
samlify is a Node.js library for SAML single sign-on. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
OpenPGP.js is a JavaScript implementation of the OpenPGP protocol. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in Cisco IOS Software for Cisco Catalyst 2960X, 2960XR, 2960CX, and 3560CX Series Switches could allow an authenticated, local attacker with privilege level 15 or an unauthenticated. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.
Improper Verification of Cryptographic Signature vulnerability in LibreOffice allows PDF Signature Spoofing by Improper Validation. Rated low severity (CVSS 2.4), this vulnerability is low attack complexity. No vendor patch available.
CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability. Rated high severity (CVSS 8.0), this vulnerability is low attack complexity. No vendor patch available.
CarlinKit CPC200-CCPA Improper Verification of Cryptographic Signature Code Execution Vulnerability. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity.
A vulnerability in the web-based management interface of Cisco Secure Network Analytics could allow an authenticated, remote attacker with valid administrative credentials to execute arbitrary. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
MSI Center before 2.0.52.0 has Missing PE Signature Validation. Rated high severity (CVSS 8.1), this vulnerability is no authentication required. No vendor patch available.
MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The OpenSAML C++ library before 3.3.1 allows forging of signed SAML messages via parameter manipulation (when using SAML bindings that rely on non-XML signatures). Rated medium severity (CVSS 4.0), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
xml-crypto is an XML digital signature and encryption library for Node.js. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
xml-crypto is an XML digital signature and encryption library for Node.js. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under Chosen Message. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity.
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 13.8%.
A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
A vulnerability in the interprocess communication (IPC) channel of Cisco Secure Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 Application 20.0.1923 allows Insufficient Signature Validation OVE-20230524-0014. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Improper verification of the digital signature in ksojscore.dll in Kingsoft WPS Office in versions equal or less than 12.1.0.18276 on Windows allows an attacker to load an arbitrary Windows library. Rated critical severity (CVSS 9.3), this vulnerability is low attack complexity. No vendor patch available.
aes-gcm is a pure Rust implementation of the AES-GCM. Rated medium severity (CVSS 5.6), this vulnerability is no authentication required. No vendor patch available.
`jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI). Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious CPU microcode resulting in loss of confidentiality and. Rated high severity (CVSS 7.2). No vendor patch available.
Hyperbridge is a hyper-scalable coprocessor for verifiable, cross-chain interoperability. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Rated high severity (CVSS 7.6), this vulnerability is remotely exploitable. Epss exploitation probability 11.8% and no vendor patch available.
The AWS Cloud Development Kit (AWS CDK) is an open-source software development framework to define cloud infrastructure in code and provision it through AWS CloudFormation. Rated low severity (CVSS 1.8), this vulnerability is remotely exploitable. No vendor patch available.
Improper signature verification in Ivanti EPM before the 2024 January-2025 Security Update and 2022 SU6 January-2025 Security Update allows a remote unauthenticated attacker to achieve remote code. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Howyar UEFI Application "Reloader" (32-bit and 64-bit) is vulnerable to execution of unsigned software in a hardcoded path. Rated high severity (CVSS 8.2), this vulnerability is low attack complexity. Public exploit code available.
cjwt is a C JSON Web Token (JWT) Implementation. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A library injection vulnerability exists in Microsoft Excel 16.83 for macOS. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft Outlook 16.83.3 for macOS. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft Word 16.83 for macOS. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft OneNote 16.83 for macOS. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in the WebView.app helper app of Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in the com.microsoft.teams2.modulehost.app helper app of Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft PowerPoint 16.83 for macOS. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Dell RecoverPoint for Virtual Machines 6.0.x contains an OS Command injection vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
This vulnerability exists in the TP-Link Archer C50 due to improper signature verification mechanism in the firmware upgrade process at its web interface. Rated high severity (CVSS 8.5), this vulnerability is low attack complexity. No vendor patch available.
Dell NetWorker Management Console, version(s) 19.11, contain(s) an Improper Verification of Cryptographic Signature vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Improper Verification of Cryptographic Signature in SmartSwitch prior to SMR Dec-2024 Release 1 allows local attackers to install malicious applications. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
A improper verification of cryptographic signature vulnerability in plugin management in iota C.ai Conversational Platform from 1.0.0 through 2.1.3 allows remote authenticated users to load a. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Cryptographic signature verification bypass in Northern.tech Mender Client 5 (before 5.0.4) allows unauthenticated remote attackers to circumvent JWT-based authentication controls. Tagged as both an Authentication Bypass and a JWT Attack, this CWE-347 flaw means the client fails to properly validate cryptographic signatures on tokens, potentially enabling unauthorized access to protected functionality or data. No public exploit code has been identified at time of analysis, and the low EPSS score of 0.02% (5th percentile) suggests exploitation is not currently widespread.
Arbitrary root code execution in Phoenix Contact PLCnext Control devices (all firmware before 2026.0.3) is reachable by an authenticated low-privileged Engineer user who installs APP packages from the PLCnext Store through the Web-based Management (WBM) interface. Because the device never verifies the integrity or signature of the downloaded app (CWE-347, tagged JWT Attack), a tampered package runs as root and can compromise the integrity and availability of the controller. No public exploit is identified at time of analysis and EPSS is low (0.06%, 18th percentile), but the flaw is network-reachable with low attack complexity and a vendor patch (2026.0.3) is available.
Improper verification of cryptographic signature in the Radeon RGB tool could allow a malicious file placed in the installation directory to be run with elevated privileges potentially leading to. Rated high severity (CVSS 7.0), this vulnerability is low attack complexity. No vendor patch available.
Improper cryptographic signature verification in Dolibarr ERP CRM up to version 23.0.2 allows remote attackers to bypass signature validation in the Online Signature Module, potentially forging or manipulating signed transactions. The vulnerability affects the dol_verifyHash function and has been publicly disclosed with exploit code available, though exploitation requires high technical complexity and is not confirmed as actively exploited in production environments.
Cryptographic signature verification bypass in Elastic Package Registry versions 0.1.0 through 1.37.0 allows an adversary-in-the-middle, or an attacker with influence over a self-hosted registry's served content, to substitute tampered packages that are accepted without triggering integrity check failures. The flaw (CWE-347) undermines supply-chain integrity for organizations running self-hosted registry instances. No active exploitation is confirmed (SSVC: exploitation none; EPSS 0.02%), but the high integrity impact and zero-privilege-required vector make patching to 1.38.0 a priority for self-hosted deployments.
Improper verification of cryptographic signatures in Cesanta Mongoose versions up to 7.20 allows remote attackers to bypass GCM authentication tag validation in the mg_aes_gcm_decrypt function. The vulnerability has high attack complexity and requires no user interaction, but provides only integrity impact (not confidentiality or availability). Publicly available exploit code exists, and vendor has released patched version 7.21.
The Nimiq staking contract accepts UpdateValidator transactions that omit proof-of-knowledge validation when updating voting keys, enabling rogue-key attacks against BLS signature aggregation used in Tendermint block justification. An attacker who can predict the next epoch's validator set could forge quorum-appearing block justifications with a single signature. Exploitation is constrained by the requirement to predict future validator set composition via VRF, making real-world attacks unlikely despite the critical cryptographic impact. Vendor-released patch v1.3.0 addresses the vulnerability.
OpenClaw 2026.3.22 through 2026.3.30 contain a signature verification bypass in the Nostr direct message (DM) ingress handler that processes pairing challenges before validating event signatures. Remote unauthenticated attackers can send forged DMs to create bogus pending pairing entries, exhaust shared pairing capacity, and trigger unbounded relay and logging work on the Nostr channel, causing denial of service. No public exploit code or active exploitation has been confirmed; a vendor patch is available in version 2026.3.31 and later.
Authentication bypass in Siemens SINEC NMS versions prior to V4.0 SP3 with UMC allows unauthenticated remote attackers to gain unauthorized access due to insufficient user identity validation in the UMC component (CWE-347: Improper Verification of Cryptographic Signature). The vulnerability enables network-based attacks with low complexity requiring no user interaction (CVSS 7.3, AV:N/AC:L/PR:N/UI:N), granting partial access to confidentiality, integrity, and availability. ZDI tracking ID CAN-27564 suggests coordinated disclosure. No active exploitation (CISA KEV) or public exploit code confirmed at time of analysis, though JWT-related authentication bypasses are well-understood attack primitives.
LightRAG API authentication can be bypassed via JWT algorithm confusion attack, where an attacker forges tokens by specifying 'alg': 'none' in the JWT header to impersonate any user including administrators. The vulnerability exists in the validate_token() method in lightrag/api/auth.py (line 128), which accepts the unsigned 'none' algorithm despite not explicitly permitting it, allowing unauthenticated remote attackers to gain unauthorized access to protected resources. Publicly available proof-of-concept code demonstrates the attack; vendor has released a patch addressing the root cause of improper algorithm validation.
Denial of service in rust-rpm-sequoia allows local attackers to crash RPM signature verification by submitting specially crafted RPM files that trigger unhandled errors in OpenPGP parsing, preventing legitimate package management operations. CVSS 4.0 (low severity), local attack vector, non-authenticating. No public exploit code or active exploitation confirmed.
Botan cryptography library versions 3.0.0 through 3.10.x fail to verify OCSP response signatures during X.509 certificate path validation, allowing attackers to forge certificate status responses and potentially bypass revocation checks. This integrity bypass affects any application using Botan for TLS or certificate validation and requires network positioning but not authentication. The vulnerability was patched in version 3.11.0.
A downgrade vulnerability affecting Intel-based Mac computers allows malicious applications to bypass code-signing restrictions and access user-sensitive data. The vulnerability impacts macOS Sequoia (versions before 15.7.5), macOS Sonoma (versions before 14.8.5), macOS Tahoe (versions before 26.3 and 26.4), and affects all Intel-based Mac systems running vulnerable versions. An attacker can craft an application that exploits insufficient code-signing validation to downgrade security protections and exfiltrate sensitive user information.
PuTTY versions up to 0.83 contain a weak authentication vulnerability in the Ed25519 signature verification function (eddsa_verify in crypto/ecc-ssh.c) that allows remote attackers to potentially forge or manipulate digital signatures due to improper validation of Ed25519 signature components. While a public proof-of-concept exploit exists and the vulnerability affects signature verification, the real-world impact remains unproven, with CVSS 3.7 (low severity) and EPSS probability indicating exploitation is difficult and requires high complexity. The vendor (PuTTY developers) has already released a patch addressing this issue.
A cryptographic signature verification flaw exists in tinyssh's Ed25519 signature handler (crypto_sign_ed25519_tinyssh.c) that allows improper validation of signatures, potentially enabling an attacker to forge or bypass signature checks. Affected versions of janmojzis tinyssh up to 20250501 are impacted, with the vulnerability requiring local execution and high attack complexity. A public exploit has been disclosed, and vendor patches are available in version 20260301.
A security vulnerability in HCL AION (CVSS 4.8). Remediation should follow standard vulnerability management procedures.
Galaxy Store prior to version 4.6.03.8 contains an improper cryptographic signature verification vulnerability that allows a local attacker to install arbitrary applications without proper authorization. An attacker with physical or local access to a device can bypass the signature validation mechanism, enabling installation of malicious or unauthorized apps. While the CVSS score of 5.9 is moderate, the integrity impact is high, making this a meaningful threat to device security and app ecosystem integrity.
Smart Switch prior to version 3.7.69.15 contains an improper cryptographic signature verification vulnerability that allows remote attackers to bypass authentication mechanisms. The vulnerability has a CVSS score of 5.3 with network-based attack vector and low complexity, requiring only user interaction. While no public exploit or KEV status has been confirmed, the authentication bypass capability presents a moderate risk for unauthorized access to affected devices.
This vulnerability involves improper cryptographic signature verification in the Font Settings component of Samsung devices prior to the March 2026 Security Update Release 1. A physical attacker can bypass signature validation to install custom fonts, potentially leading to integrity compromise of system font resources. While the CVSS score is moderate at 5.1, the attack requires physical access and user interaction, limiting real-world exploitation frequency.
A flaw was found in Keycloak’s WebAuthn registration component. [CVSS 3.1 LOW]
Improper Verification of Cryptographic Signature vulnerability in liuyueyi quick-media (plugins/svg-plugin/batik-codec-fix/src/main/java/org/apache/batik/ext/awt/image/codec/util modules). This vulnerability is associated with program files SeekableOutputStream.Java.
Improper verification of cryptographic signatures in Adobe Acrobat Reader versions up to 24.001.30264, 20.005.30803, and 25.001.20982 allows local attackers to bypass cryptographic protections and gain limited unauthorized write access to PDF documents. The vulnerability requires user interaction with a malicious or crafted PDF containing an improperly signed element. With a CVSS score of 3.3 and local attack vector, this represents a low-severity security feature bypass affecting document integrity verification.
Improper verification of cryptographic signatures in Adobe Acrobat Reader and Acrobat DC versions up to 24.001.30273, 25.001.20982, and 20.005.30803 allows local attackers to bypass security features and gain limited unauthorized write access to PDF documents. Exploitation requires user interaction with a malicious or specially crafted cryptographic signature embedded in a PDF file. No active exploitation has been confirmed at the time of analysis.
Authentication bypass in Fortinet FortiWeb 8.0.0, 7.6.0-7.6.4, and 7.4.0-7.4.9 allows unauthenticated remote attackers to circumvent FortiCloud SSO login by sending a crafted SAML response message. The flaw stems from improper cryptographic signature verification (CWE-347), enabling forgery of authentication assertions. No public exploit identified at time of analysis, EPSS sits at 0.26% (50th percentile), and the issue is not currently listed in CISA KEV, though Fortinet products have historically been high-value targets.
auth0/node-jws is a JSON Web Signature implementation for Node.js. In versions 3.2.2 and earlier and version 4.0.0, auth0/node-jws has an improper signature verification vulnerability when using the HS256 algorithm under specific conditions. Applications are affected when they use the jws.createVerify() function for HMAC algorithms and use user-provided data from the JSON Web Signature protected header or payload in HMAC secret lookup routines, which can allow attackers to bypass signature verification. This issue has been patched in versions 3.2.3 and 4.0.1.
XML-Sig versions 0.27 through 0.67 for Perl incorrectly validates XML files if signatures are omitted. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
GoSign Desktop versions 2.4.0 and earlier use an unsigned update manifest for distributing application updates. Rated high severity (CVSS 7.0), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Improper verification of cryptographic signature in the installer for Zoom Workplace VDI Client for Windows may allow an authenticated user to conduct an escalation of privilege via local access. Rated high severity (CVSS 7.5). No vendor patch available.
Evervault is a payment security solution. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
In JetBrains ReSharper before 2025.2.4 missing signature verification in DPA Collector allows local privilege escalation. Rated high severity (CVSS 8.4), this vulnerability is low attack complexity. No vendor patch available.
Improper authentication in the API authentication middleware of HCL DevOps Loop allows authentication tokens to be accepted without proper validation of their expiration and cryptographic signature. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X12STW . Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X13SEM-F . Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Linkr is a lightweight file delivery system that downloads files from a webserver. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.
E3 Site Supervisor Control (firmware version < 2.31F01) firmware upgrade packages are unsigned. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
An insufficiently secured internal function allows session generation for arbitrary users. Rated high severity (CVSS 8.8). No vendor patch available.
gnark is a zero-knowledge proof system framework. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A potential vulnerability was reported in the Lenovo 510 FHD and Performance FHD web cameras that could allow an attacker with physical access to write arbitrary firmware updates to the device over a. Rated high severity (CVSS 7.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in Mendix SAML (Mendix 10.12 compatible) (All versions < V4.0.3), Mendix SAML (Mendix 10.21 compatible) (All versions < V4.1.2), Mendix SAML (Mendix 9.24. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
It was discovered that uscan, a tool to scan/watch upstream sources for new releases of software, included in devscripts (a collection of scripts to make the life of a Debian Package maintainer. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in Building X - Security Manager Edge Controller (ACC-AP) (All versions). Rated medium severity (CVSS 5.9), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
samlify is a Node.js library for SAML single sign-on. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
OpenPGP.js is a JavaScript implementation of the OpenPGP protocol. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in Cisco IOS Software for Cisco Catalyst 2960X, 2960XR, 2960CX, and 3560CX Series Switches could allow an authenticated, local attacker with privilege level 15 or an unauthenticated. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.
Improper Verification of Cryptographic Signature vulnerability in LibreOffice allows PDF Signature Spoofing by Improper Validation. Rated low severity (CVSS 2.4), this vulnerability is low attack complexity. No vendor patch available.
CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability. Rated high severity (CVSS 8.0), this vulnerability is low attack complexity. No vendor patch available.
CarlinKit CPC200-CCPA Improper Verification of Cryptographic Signature Code Execution Vulnerability. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity.
A vulnerability in the web-based management interface of Cisco Secure Network Analytics could allow an authenticated, remote attacker with valid administrative credentials to execute arbitrary. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
MSI Center before 2.0.52.0 has Missing PE Signature Validation. Rated high severity (CVSS 8.1), this vulnerability is no authentication required. No vendor patch available.
MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The OpenSAML C++ library before 3.3.1 allows forging of signed SAML messages via parameter manipulation (when using SAML bindings that rely on non-XML signatures). Rated medium severity (CVSS 4.0), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
xml-crypto is an XML digital signature and encryption library for Node.js. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
xml-crypto is an XML digital signature and encryption library for Node.js. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under Chosen Message. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity.
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 13.8%.
A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
A vulnerability in the interprocess communication (IPC) channel of Cisco Secure Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 Application 20.0.1923 allows Insufficient Signature Validation OVE-20230524-0014. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Improper verification of the digital signature in ksojscore.dll in Kingsoft WPS Office in versions equal or less than 12.1.0.18276 on Windows allows an attacker to load an arbitrary Windows library. Rated critical severity (CVSS 9.3), this vulnerability is low attack complexity. No vendor patch available.
aes-gcm is a pure Rust implementation of the AES-GCM. Rated medium severity (CVSS 5.6), this vulnerability is no authentication required. No vendor patch available.
`jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI). Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious CPU microcode resulting in loss of confidentiality and. Rated high severity (CVSS 7.2). No vendor patch available.
Hyperbridge is a hyper-scalable coprocessor for verifiable, cross-chain interoperability. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Rated high severity (CVSS 7.6), this vulnerability is remotely exploitable. Epss exploitation probability 11.8% and no vendor patch available.
The AWS Cloud Development Kit (AWS CDK) is an open-source software development framework to define cloud infrastructure in code and provision it through AWS CloudFormation. Rated low severity (CVSS 1.8), this vulnerability is remotely exploitable. No vendor patch available.
Improper signature verification in Ivanti EPM before the 2024 January-2025 Security Update and 2022 SU6 January-2025 Security Update allows a remote unauthenticated attacker to achieve remote code. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Howyar UEFI Application "Reloader" (32-bit and 64-bit) is vulnerable to execution of unsigned software in a hardcoded path. Rated high severity (CVSS 8.2), this vulnerability is low attack complexity. Public exploit code available.
cjwt is a C JSON Web Token (JWT) Implementation. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A library injection vulnerability exists in Microsoft Excel 16.83 for macOS. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft Outlook 16.83.3 for macOS. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft Word 16.83 for macOS. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft OneNote 16.83 for macOS. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in the WebView.app helper app of Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in the com.microsoft.teams2.modulehost.app helper app of Microsoft Teams (work or school) 24046.2813.2770.1094 for macOS. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A library injection vulnerability exists in Microsoft PowerPoint 16.83 for macOS. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Dell RecoverPoint for Virtual Machines 6.0.x contains an OS Command injection vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
This vulnerability exists in the TP-Link Archer C50 due to improper signature verification mechanism in the firmware upgrade process at its web interface. Rated high severity (CVSS 8.5), this vulnerability is low attack complexity. No vendor patch available.
Dell NetWorker Management Console, version(s) 19.11, contain(s) an Improper Verification of Cryptographic Signature vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Improper Verification of Cryptographic Signature in SmartSwitch prior to SMR Dec-2024 Release 1 allows local attackers to install malicious applications. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
A improper verification of cryptographic signature vulnerability in plugin management in iota C.ai Conversational Platform from 1.0.0 through 2.1.3 allows remote authenticated users to load a. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.