Authentication Bypass
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
How It Works
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications. Instead of cracking passwords through brute force, attackers manipulate the authentication process itself to gain unauthorized entry. This typically occurs through one of several pathways: exploiting hardcoded credentials embedded in source code or configuration files, manipulating parameters in authentication requests to skip verification steps, or leveraging broken session management that fails to properly validate user identity.
The attack flow often begins with reconnaissance to identify authentication endpoints and their underlying logic. Attackers may probe for default administrative credentials that were never changed, test whether certain URL paths bypass login requirements entirely, or intercept and modify authentication tokens to escalate privileges. In multi-step authentication processes, flaws in state management can allow attackers to complete only partial verification steps while still gaining full access.
More sophisticated variants exploit single sign-on (SSO) or OAuth implementations where misconfigurations in trust relationships allow attackers to forge authentication assertions. Parameter tampering—such as changing a "role=user" field to "role=admin" in a request—can trick poorly designed systems into granting elevated access without proper verification.
Impact
- Complete account takeover — attackers gain full control of user accounts, including administrative accounts, without knowing legitimate credentials
- Unauthorized data access — ability to view, modify, or exfiltrate sensitive information including customer data, financial records, and intellectual property
- System-wide compromise — admin-level access enables installation of backdoors, modification of security controls, and complete infrastructure takeover
- Lateral movement — bypassed authentication provides a foothold for moving deeper into networks and accessing additional systems
- Compliance violations — unauthorized access triggers breach notification requirements and regulatory penalties
Real-World Examples
CrushFTP suffered a critical authentication bypass allowing attackers to access file-sharing functionality without any credentials. The vulnerability enabled direct server-side template injection, leading to remote code execution on affected systems. Attackers actively exploited this in the wild to establish persistent access to enterprise file servers.
Palo Alto's Expedition migration tool contained a flaw permitting attackers to reset administrative credentials without authentication. This allowed complete takeover of the migration environment, potentially exposing network configurations and security policies being transferred between systems.
SolarWinds Web Help Desk (CVE-2024-28987) shipped with hardcoded internal credentials that could not be changed through normal administrative functions. Attackers discovering these credentials gained full administrative access to helpdesk systems containing sensitive organizational information and user data.
Mitigation
- Implement multi-factor authentication (MFA) — requires attackers to compromise additional verification factors beyond bypassed primary authentication
- Eliminate hardcoded credentials — use secure credential management systems and rotate all default credentials during deployment
- Enforce authentication on all endpoints — verify every request requires valid authentication; no "hidden" administrative paths should exist
- Implement proper session management — use cryptographically secure session tokens, validate on server-side, enforce timeout policies
- Apply principle of least privilege — limit damage by ensuring even authenticated users only access necessary resources
- Regular security testing — conduct penetration testing specifically targeting authentication logic and flows
Recent CVEs (32269)
The Secure Passkeys plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the delete_passkey() and passkeys_list() function in all versions up to, and. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint. Rated low severity (CVSS 3.1), this vulnerability is remotely exploitable. No vendor patch available.
Hardcoded credentials in default configuration of PPress 0.0.9. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Insecure direct object reference (IDOR) vulnerability in the Contacts Center widget in Liferay Portal 7.4.0 through 7.4.3.119, and older unsupported versions, and Liferay DXP 2023.Q4.0 through. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vasion Print (formerly PrinterLogic) Virtual Appliance Host versions prior to 22.0.951 and Application prior to 20.0.2368 (VA and SaaS deployments) contain shared, hardcoded SSH host private keys in. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Vasion Print (formerly PrinterLogic) Virtual Appliance Host versions prior to 22.0.951, Application prior to 20.0.2368 (VA and SaaS deployments) contain an undocumented local user account named. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Vasion Print (formerly PrinterLogic) Virtual Appliance Host versions prior to 25.1.102 and Application versions prior to 25.1.1413 (macOS/Linux client deployments) are vulnerable to an authentication. Rated high severity (CVSS 8.5), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Vasion Print (formerly PrinterLogic) Virtual Appliance Host versions prior to 1.0.735 and Application versions prior to 20.0.1330 (macOS/Linux client deployments) contain a vulnerability in the local. Rated medium severity (CVSS 6.9), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
General Bytes Crypto Application Server (CAS) beginning with version 20201208 prior to 20220531.38 (backport) and 20220725.22 (mainline) contains an authentication bypass in the admin web interface. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Accela Automation Platform 22.2.3.0.230103 contains multiple vulnerabilities in the Test Script feature. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Authorization Bypass Through User-Controlled Key, Improper Authorization vulnerability in Bimser Solution Software Trade Inc. Rated medium severity (CVSS 6.4). No vendor patch available.
The Miniorange OTP Verification with Firebase plugin for WordPress is vulnerable to privilege escalation due to a missing capability check on the 'handle_mofirebase_form_options' function in versions. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Tronclass developed by WisdomGarden has an Insecure Direct object Reference vulnerability, allowing remote attackers with regular privilege to modify a specific parameter to access other users' files. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Service Finder Bookings plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 6.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Service Finder SMS System plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 2.0.0. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
The Kubio AI Page Builder plugin for WordPress is vulnerable to unauthorized plugin installation due to a missing capability check on the kubio-image-hub-install-plugin AJAX action in all versions up. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In Internet2 Grouper 5.17.1 before 5.20.5, group admins who are not Grouper sysadmins can configure loader jobs. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Goza - Nonprofit Charity WordPress Theme theme for WordPress is vulnerable to unauthorized arbitrary file uploads due to a missing capability check on the 'beplus_import_pack_install_plugin'. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
H3C devices running firmware version NX15V100R015 are vulnerable to unauthorized access due to insecure default credentials. Rated high severity (CVSS 8.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
A command injection vulnerability in COMFAST CF-XR11 (firmware V2.7.2) exists in the multi_pppoe API, processed by the sub_423930 function in /usr/bin/webmgnt. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
The secret used for validating authentication tokens is hardcoded in device firmware for affected versions. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An attacker with adjacent access, without authentication, can exploit this vulnerability to retrieve a hard-coded password embedded in publicly available software. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Missing authentication in AIBattery's XPC service (versions up to 1.0.9) allows local authenticated attackers with low privileges to gain high-integrity access to battery management functions, potentially enabling unauthorized system configuration changes. The vulnerability affects the BatteryXPCService.swift component in com.collweb.AIBatteryHelper, with publicly available exploit code demonstrating the attack path. EPSS score of 0.02% (7th percentile) indicates low predicted exploitation probability in the wild, though the POC availability lowers the technical barrier for local attackers.
A vulnerability was detected in Airsonic-Advanced up to 10.6.0. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Privacy Policy Generator, Terms & Conditions Generator WordPress Plugin : WP Legal Pages plugin for WordPress is vulnerable to unauthorized access of functionality due to a missing capability. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Chained Quiz plugin for WordPress is vulnerable to Insecure Direct Object Reference in version 1.3.4 and below via the quiz submission and completion mechanisms due to missing validation on a. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
The CBIS/NCS Manager API is vulnerable to an authentication bypass. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
NVIDIA Triton Inference Server for Windows and Linux contains a vulnerability where an attacker could cause memory corruption by identifying and accessing the shared memory region used by the Python. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Wondershare Repairit SAS Token Incorrect Permission Assignment Authentication Bypass Vulnerability. Rated critical severity (CVSS 9.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Wondershare Repairit Incorrect Permission Assignment Authentication Bypass Vulnerability. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A security flaw has been discovered in itsourcecode E-Commerce Website 1.0. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
A vulnerability was identified in itsourcecode E-Commerce Website 1.0. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
The Scratch Channel is a news website. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Dragonfly is an open source P2P-based file distribution and image acceleration system. Rated high severity (CVSS 7.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A flaw has been found in SourceCodester Online Exam Form Submission 1.0. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Use of Hard-coded Credentials vulnerability in ABB FLXEON.3.5 and newer versions. Rated high severity (CVSS 7.3). No vendor patch available.
In the Linux kernel, the following vulnerability has been resolved: fs: dlm: fix race in lowcomms This patch fixes a race between queue_work() in _dlm_lowcomms_commit_msg() and srcu_read_unlock(). Rated medium severity (CVSS 4.7).
Jenkins 2.527 and earlier, LTS 2.516.2 and earlier does not perform a permission check for the authenticated user profile dropdown menu, allowing attackers without Overall/Read permission to obtain. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Jenkins 2.527 and earlier, LTS 2.516.2 and earlier does not perform a permission check in the sidepanel of a page intentionally accessible to users lacking Overall/Read permission, allowing attackers. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Authorization Bypass Through User-Controlled Key vulnerability in SecHard Information Technologies SecHard allows Forceful Browsing.6.2-20250805. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable. No vendor patch available.
The Sydney theme for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'activate_modules' function in all versions up to, and including, 2.56. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A Protection Mechanism Failure vulnerability in mmaitre314 picklescan versions up to and including 0.0.30 allows a remote attacker to bypass the unsafe globals check. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An Improper Handling of Exceptional Conditions vulnerability in the ZIP archive scanning component of mmaitre314 picklescan allows a remote attacker to bypass security scans. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An Improper Input Validation vulnerability in the scanning logic of mmaitre314 picklescan versions up to and including 0.0.30 allows a remote attacker to bypass pickle files security checks by. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
In JetBrains TeamCity before 2025.07.2 project isolation bypass was possible due to race condition. Rated medium severity (CVSS 4.2), this vulnerability is remotely exploitable. No vendor patch available.
Certain models of Industrial Cellular Gateway developed by Planet Technology have a Missing Authentication vulnerability, allowing unauthenticated remote attackers to manipulate the device via a. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability (CWE-428) has been identified in the Uninterruptible Power Supply (UPS) management application provided by OMRON SOCIAL SOLUTIONS Co., Ltd., where the executable file paths of Windows. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
A vulnerability in EdgeConnect SD-WAN ECOS could allow an authenticated remote threat actor with admin privileges to access sensitive unauthorized system files. Rated medium severity (CVSS 4.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A vulnerability in the cryptographic logic used by HPE Aruba Networking EdgeConnect SD-WAN Gateways could allow an authenticated remote attacker to gain shell access. Rated high severity (CVSS 7.2). No vendor patch available.
A broken access control vulnerability exists in HPE Aruba Networking EdgeConnect OS (ECOS). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in the HPE Aruba Networking SD-WAN Gateways could allow an unauthenticated remote attacker to bypass firewall protections. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Liferay Portal 7.3.0 through 7.4.3.111, and Liferay DXP 2023.Q4.0, 2023.Q3.1 through 2023.Q3.4, 7.4 GA through update 92, and 7.3 GA through update 35 does not perform an authorization check when. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in the EnableTwoFactorAuthRequest SOAP endpoint of Zimbra Collaboration (ZCS) allows an attacker with valid user credentials to bypass Two-Factor Authentication (2FA) protection. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Ilevia EVE X1 Server version ≤ 4.7.18.0.eden contains a vulnerability in its server-side logging mechanism that allows unauthenticated remote attackers to retrieve plaintext credentials from exposed. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Insufficient ui warning of dangerous operations in Microsoft Edge for Android allows an unauthorized attacker to perform spoofing over a network. Rated medium severity (CVSS 4.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An incorrect API discovered in Signify Wiz Connected 1.9.1 allows attackers to remotely launch a DoS on Wiz devices only requiring the MAC address. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The mcp-database-server (MCP Server) 1.1.0 and earlier, as distributed via the npm package @executeautomation/database-server, fails to implement adequate security controls to properly enforce a. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Authorization Bypass Through User-Controlled Key, Externally Controlled Reference to a Resource in Another Sphere, Improper Authorization vulnerability in Patika Global Technologies HumanSuite allows. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Authorization Bypass Through User-Controlled Key vulnerability in Beefull Energy Technologies Beefull App allows Exploitation of Trusted Identifiers.07.2025. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
If the Access Control List is enforced by the Control-M/Agent and the C router is in use (default in Out-of-support Control-M/Agent versions 9.0.18 to 9.0.20 and potentially earlier unsupported. Rated critical severity (CVSS 9.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An authentication bypass vulnerability exists in the out-of-support Control-M/Agent versions 9.0.18 to 9.0.20 and potentially earlier unsupported versions when using an empty or default kdb keystore. Rated critical severity (CVSS 9.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Mitigation bypass in the Web Compatibility: Tooling component. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Spoofing issue in the WebAuthn component in Firefox for Android. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Same-origin policy bypass in the Layout component. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Blaze Demo Importer plugin for WordPress is vulnerable to unauthorized limited plugin install due to a missing capability check on the 'blaze_demo_importer_install_plugin' function in all. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Spring Framework annotation detection mechanism may not correctly resolve annotations on methods within type hierarchies with a parameterized super type with unbounded generics. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Spring Security annotation detection mechanism may not correctly resolve annotations on methods within type hierarchies with a parameterized super type with unbounded generics. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is an unauthorized access vulnerability in ZTE T5400. Rated medium severity (CVSS 5.7), this vulnerability is low attack complexity. No vendor patch available.
The Sparkle framework includes a helper tool Autoupdate. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
The Sparkle framework includes an XPC service Downloader.xpc, by default this service is private to the application its bundled with. Rated medium severity (CVSS 4.8), this vulnerability is low attack complexity. No vendor patch available.
Authorization Bypass Through User-Controlled Key vulnerability with user privileges in ArgusTech BILGER allows Exploitation of Trusted Identifiers.4.6. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Click Studios Passwordstate before 9.9 Build 9972 has a potential authentication bypass for Passwordstate emergency access. Rated low severity (CVSS 3.2), this vulnerability is no authentication required. No vendor patch available.
This issue was addressed with improved checks. Rated high severity (CVSS 8.2), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with improved handling of symlinks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with additional sandbox restrictions. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An access issue was addressed with additional sandbox restrictions. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A file quarantine bypass was addressed with additional checks. Rated medium severity (CVSS 5.2), this vulnerability is low attack complexity. No vendor patch available.
A downgrade issue was addressed with additional code-signing restrictions. Rated medium severity (CVSS 4.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
An access issue was addressed with additional sandbox restrictions. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
The issue was resolved by blocking unsigned services from launching on Intel Macs. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed by removing the vulnerable code. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with additional entitlement checks. Rated medium severity (CVSS 6.2), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with additional restrictions. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
This issue was addressed by removing the vulnerable code. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with additional entitlement checks. Rated medium severity (CVSS 5.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Quick Facts
- Typical Severity
- CRITICAL
- Category
- auth
- Total CVEs
- 32269