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CWE-305

Authentication Bypass by Primary Weakness

129 CVEs Avg CVSS 7.5 MITRE
35
CRITICAL
49
HIGH
41
MEDIUM
3
LOW
25
POC
2
KEV

Monthly

Threat Model
CVE-2026-86207 Sep 05, 19:12 HIGH POC PATCH This Week

Authentication bypass in N-able N-central before version 2026.3 HF 3 permits low-privileged authenticated users to access internal-only APIs without proper authorization checks, achieving effective privilege escalation within the platform. N-central is a remote monitoring and management (RMM) platform used extensively by managed service providers (MSPs) to control customer endpoints, meaning unauthorized API access could cascade to managed devices across multiple customer environments. No public exploit has been identified at time of analysis, but a vendor patch has been released as HF 3.

Authentication Bypass N Central N Able
NVD VulDB
CVSS 4.0
7.7
EPSS
0.3%
Threat Model
CVE-2026-81578 Aug 28, 11:39 HIGH POC KEV PATCH THREAT Act Now

Improper access control (CWE-305) in the PaperCut MF and PaperCut NG web management interface allows unauthenticated remote attackers to trigger backend administrative operations before access validation completes, enabling unauthorized modification of system configurations. The CVSS 4.0 vector rates this AV:N/AC:L/PR:N/UI:N with high integrity impact, indicating network-exploitable, zero-authentication exploitation with no user interaction required. No public exploit code or CISA KEV listing has been identified at time of analysis, though PaperCut products have historically been high-value ransomware targets.

Information Disclosure Papercut Mf Ng Papercut
NVD VulDB GitHub
CVSS 4.0
8.8
EPSS
0.4%
Threat
4.8
CVE-2026-78619 Aug 25, 21:52 CRITICAL Act Now

Two-factor authentication bypass in the Perl module Punk::Plugin::TOTP before 0.05 lets an attacker who already knows a victim's password clear the victim's TOTP challenge using a recovery code issued to the attacker's own account. The flaw stems from the recovery-code helper looking up codes by digest across all users and then binding ownership through a numeric comparison of user identifiers, which fails whenever accounts are keyed by username, email, or UUID. No CISA KEV listing and no public exploit identified at time of analysis, with a low EPSS score of 0.44% (37th percentile) despite the 9.8 CVSS rating.

Information Disclosure
NVD
CVSS 3.1
9.8
EPSS
0.4%
CVE-2026-65935 Aug 13, 14:24 HIGH This Week

Bluetooth LE legacy pairing authentication in Silicon Labs RS9116W and SiWx917 wireless modules (WiseConnect SDK) can be bypassed by manipulating the Temporary Key (TK) value during Passkey Entry association, allowing an adjacent unauthenticated attacker to pair with the target device without possessing the correct passkey. Successful exploitation yields high confidentiality and integrity impact on the vulnerable system. The vulnerability is academically documented as B-E3 in a published research paper (arxiv.org/pdf/2409.02905); no public exploit tool or CISA KEV entry has been identified at time of analysis.

Authentication Bypass Wiseconnect Silabs Com
NVD
CVSS 4.0
7.6
EPSS
0.2%
CVE-2026-19292 Aug 13, 14:17 HIGH PATCH This Week

Security level downgrade during Bluetooth Low Energy re-pairing in Silicon Labs WiseConnect exposes the Long Term Key (LTK) to practical brute-force attack by an adjacent unauthenticated attacker. Devices running WiseConnect 4.0.0 through 4.0.x and WiseConnect 2.0.0 through 2.13.x accept re-pairing negotiations at weaker security parameters than originally established, reducing LTK entropy and enabling offline key recovery. No public exploit code has been identified at time of analysis, though the vulnerability class is formally documented as V4 in the BLERP academic paper (NDSS); a vendor patch is available in WiseConnect 4.1.0 and 2.14.0.

Information Disclosure Wiseconnect Silabs Com
NVD
CVSS 3.1
8.8
EPSS
0.2%
CVE-2026-19349 Aug 13, 00:00 CRITICAL Act Now

Authentication bypass in LemonLDAP::NG (CWE-305) allows remote unauthenticated attackers to defeat a primary authentication control and access protected resources, tagged by the reporter as leading to information disclosure. All maintained branches are affected, with fixes shipped in 2.23.3, 2.21.5, and 2.16.9; the issue was disclosed via oss-security and packaged by Ubuntu. There is no public exploit identified at time of analysis, and EPSS is low at 0.27% (18th percentile) despite the 9.8 CVSS.

Information Disclosure
NVD
CVSS 3.1
9.8
EPSS
0.3%
CVE-2026-10539 Jul 01, 07:55 CRITICAL Act Now

Unauthenticated command execution in BMC Control-M/Server (versions 9.0.20.x through 9.0.21.200) arises because a Control-M/Server communication command fails to sufficiently filter or sanitize user-supplied input, allowing an attacker to run unauthorized commands and potentially fully compromise the affected server. The flaw carries a critical CVSS 4.0 base score of 9.5 and is classified as an authentication bypass by Airbus, who reported it. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV.

Authentication Bypass Control M Server Bmc
NVD VulDB
CVSS 4.0
9.5
EPSS
0.2%
CVE-2026-41052 Jun 29, 15:41 Go CRITICAL PATCH GHSA Act Now

Privilege escalation in SUSE Rancher (Kubernetes management platform) allows a user holding the Project Owner role to improperly escalate their privileges beyond their assigned project scope, per advisory GHSA-vx8h-4prv-g744. Affected releases are 2.14 before 2.14.2, 2.13 before 2.13.6, and 2.12 before 2.12.10. There is no public exploit identified at time of analysis, but the CVSS 4.0 base score of 9.4 and scope-changing impact mean a successful escalation can compromise cluster-wide confidentiality, integrity, and availability.

Privilege Escalation Rancher Suse
NVD GitHub VulDB
CVSS 4.0
9.4
EPSS
0.3%
CVE-2026-8932 Jun 24, 16:39 HIGH PATCH This Week

Incorrect mTLS connection reuse in libcurl (curl releases through 8.16.0) causes the library to reuse a pooled TLS connection even after client-certificate options - notably the private key - were changed in a way that should have forced a fresh handshake. Because those client-certificate settings were omitted from the connection-match logic, a later transfer can be sent over a connection authenticated with the wrong client identity, an integrity failure tagged as information disclosure. Rated CVSS 7.5 (C:N/I:H/A:N); EPSS is only 0.13% and there is no public exploit identified at time of analysis, though a HackerOne report (#3733910) drove the private disclosure.

Information Disclosure Curl Haxx
NVD VulDB
CVSS 3.1
7.5
EPSS
0.1%
CVE-2026-25555 Jun 08, 16:53 CRITICAL POC Act Now

Authentication bypass in OpenBullet2 through 0.3.2 lets unauthenticated remote attackers obtain full admin access by sending an empty X-Api-Key HTTP header, because the API key middleware compares the submitted value against a default empty AdminApiKey string. With CVSS 4.0 score 9.3, publicly available exploit code, and a writeup from VulnCheck/Hackernoon, this is a trivially exploitable flaw exposing the admin console and every API endpoint of any internet-reachable deployment running default configuration.

Authentication Bypass Openbullet2 Openbullet
NVD VulDB
CVSS 4.0
9.3
EPSS
0.1%
Threat Model
EPSS 0% CVSS 7.7
HIGH POC PATCH This Week

Authentication bypass in N-able N-central before version 2026.3 HF 3 permits low-privileged authenticated users to access internal-only APIs without proper authorization checks, achieving effective privilege escalation within the platform. N-central is a remote monitoring and management (RMM) platform used extensively by managed service providers (MSPs) to control customer endpoints, meaning unauthorized API access could cascade to managed devices across multiple customer environments. No public exploit has been identified at time of analysis, but a vendor patch has been released as HF 3.

Authentication Bypass N Central N Able
NVD VulDB
Threat Model
EPSS 0% 4.8 CVSS 8.8
HIGH POC KEV PATCH THREAT Act Now

Improper access control (CWE-305) in the PaperCut MF and PaperCut NG web management interface allows unauthenticated remote attackers to trigger backend administrative operations before access validation completes, enabling unauthorized modification of system configurations. The CVSS 4.0 vector rates this AV:N/AC:L/PR:N/UI:N with high integrity impact, indicating network-exploitable, zero-authentication exploitation with no user interaction required. No public exploit code or CISA KEV listing has been identified at time of analysis, though PaperCut products have historically been high-value ransomware targets.

Information Disclosure Papercut Mf Ng Papercut
NVD VulDB GitHub
EPSS 0% CVSS 9.8
CRITICAL Act Now

Two-factor authentication bypass in the Perl module Punk::Plugin::TOTP before 0.05 lets an attacker who already knows a victim's password clear the victim's TOTP challenge using a recovery code issued to the attacker's own account. The flaw stems from the recovery-code helper looking up codes by digest across all users and then binding ownership through a numeric comparison of user identifiers, which fails whenever accounts are keyed by username, email, or UUID. No CISA KEV listing and no public exploit identified at time of analysis, with a low EPSS score of 0.44% (37th percentile) despite the 9.8 CVSS rating.

Information Disclosure
NVD
EPSS 0% CVSS 7.6
HIGH This Week

Bluetooth LE legacy pairing authentication in Silicon Labs RS9116W and SiWx917 wireless modules (WiseConnect SDK) can be bypassed by manipulating the Temporary Key (TK) value during Passkey Entry association, allowing an adjacent unauthenticated attacker to pair with the target device without possessing the correct passkey. Successful exploitation yields high confidentiality and integrity impact on the vulnerable system. The vulnerability is academically documented as B-E3 in a published research paper (arxiv.org/pdf/2409.02905); no public exploit tool or CISA KEV entry has been identified at time of analysis.

Authentication Bypass Wiseconnect Silabs Com
NVD
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Security level downgrade during Bluetooth Low Energy re-pairing in Silicon Labs WiseConnect exposes the Long Term Key (LTK) to practical brute-force attack by an adjacent unauthenticated attacker. Devices running WiseConnect 4.0.0 through 4.0.x and WiseConnect 2.0.0 through 2.13.x accept re-pairing negotiations at weaker security parameters than originally established, reducing LTK entropy and enabling offline key recovery. No public exploit code has been identified at time of analysis, though the vulnerability class is formally documented as V4 in the BLERP academic paper (NDSS); a vendor patch is available in WiseConnect 4.1.0 and 2.14.0.

Information Disclosure Wiseconnect Silabs Com
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Authentication bypass in LemonLDAP::NG (CWE-305) allows remote unauthenticated attackers to defeat a primary authentication control and access protected resources, tagged by the reporter as leading to information disclosure. All maintained branches are affected, with fixes shipped in 2.23.3, 2.21.5, and 2.16.9; the issue was disclosed via oss-security and packaged by Ubuntu. There is no public exploit identified at time of analysis, and EPSS is low at 0.27% (18th percentile) despite the 9.8 CVSS.

Information Disclosure
NVD
EPSS 0% CVSS 9.5
CRITICAL Act Now

Unauthenticated command execution in BMC Control-M/Server (versions 9.0.20.x through 9.0.21.200) arises because a Control-M/Server communication command fails to sufficiently filter or sanitize user-supplied input, allowing an attacker to run unauthorized commands and potentially fully compromise the affected server. The flaw carries a critical CVSS 4.0 base score of 9.5 and is classified as an authentication bypass by Airbus, who reported it. There is no public exploit identified at time of analysis, and it is not listed in CISA KEV.

Authentication Bypass Control M Server Bmc
NVD VulDB
EPSS 0% CVSS 9.4
CRITICAL PATCH Act Now

Privilege escalation in SUSE Rancher (Kubernetes management platform) allows a user holding the Project Owner role to improperly escalate their privileges beyond their assigned project scope, per advisory GHSA-vx8h-4prv-g744. Affected releases are 2.14 before 2.14.2, 2.13 before 2.13.6, and 2.12 before 2.12.10. There is no public exploit identified at time of analysis, but the CVSS 4.0 base score of 9.4 and scope-changing impact mean a successful escalation can compromise cluster-wide confidentiality, integrity, and availability.

Privilege Escalation Rancher Suse
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Incorrect mTLS connection reuse in libcurl (curl releases through 8.16.0) causes the library to reuse a pooled TLS connection even after client-certificate options - notably the private key - were changed in a way that should have forced a fresh handshake. Because those client-certificate settings were omitted from the connection-match logic, a later transfer can be sent over a connection authenticated with the wrong client identity, an integrity failure tagged as information disclosure. Rated CVSS 7.5 (C:N/I:H/A:N); EPSS is only 0.13% and there is no public exploit identified at time of analysis, though a HackerOne report (#3733910) drove the private disclosure.

Information Disclosure Curl Haxx
NVD VulDB
EPSS 0% CVSS 9.3
CRITICAL POC Act Now

Authentication bypass in OpenBullet2 through 0.3.2 lets unauthenticated remote attackers obtain full admin access by sending an empty X-Api-Key HTTP header, because the API key middleware compares the submitted value against a default empty AdminApiKey string. With CVSS 4.0 score 9.3, publicly available exploit code, and a writeup from VulnCheck/Hackernoon, this is a trivially exploitable flaw exposing the admin console and every API endpoint of any internet-reachable deployment running default configuration.

Authentication Bypass Openbullet2 Openbullet
NVD VulDB

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