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 (32590)
Missing authorization in Power Platform allows an unauthenticated attacker to view sensitive information through a network attack vector. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Improper authentication in Microsoft Dataverse allows an authorized attacker to elevate privileges over a network. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity.
A security issue was discovered in the Kubernetes Image Builder versions <= v0.1.37 where default credentials are enabled during the image build process when using the Nutanix, OVA, QEMU or raw. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. This Use of Hard-coded Credentials vulnerability could allow attackers to gain access using credentials embedded in source code.
A security issue was discovered in the Kubernetes Image Builder versions <= v0.1.37 where default credentials are enabled during the image build process. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Use of Hard-coded Credentials vulnerability could allow attackers to gain access using credentials embedded in source code.
An issue was discovered in Samsung eMMC with KLMAG2GE4A and KLM8G1WEMB firmware. Rated medium severity (CVSS 4.9), this vulnerability is no authentication required. No vendor patch available.
Vulnerability in the PeopleSoft Enterprise ELM Enterprise Learning Management product of Oracle PeopleSoft (component: Enterprise Learning Management). Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Banking Liquidity Management product of Oracle Financial Services Applications (component: Reports). Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable. No vendor patch available.
Vulnerability in the Oracle Banking Liquidity Management product of Oracle Financial Services Applications (component: Reports). Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable. No vendor patch available.
Vulnerability in the PeopleSoft Enterprise HCM Global Payroll Core product of Oracle PeopleSoft (component: Global Payroll for Core). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Financials product of Oracle E-Business Suite (component: Common Components). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Service Contracts product of Oracle E-Business Suite (component: Authoring). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Sourcing product of Oracle E-Business Suite (component: Auctions). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Contract Lifecycle Management for Public Sector product of Oracle E-Business Suite (component: Award Processes). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle MES for Process Manufacturing product of Oracle E-Business Suite (component: Device Integration). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Work in Process product of Oracle E-Business Suite (component: Messages). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Quoting product of Oracle E-Business Suite (component: User Interface). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/Python). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.
Vulnerability in the Oracle Field Service product of Oracle E-Business Suite (component: Field Service Engineer Portal). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Common Applications Calendar product of Oracle E-Business Suite (component: Tasks). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Incentive Compensation product of Oracle E-Business Suite (component: Compensation Plan). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component: Diagnostics). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Cost Management product of Oracle E-Business Suite (component: Cost Planning). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Advanced Pricing product of Oracle E-Business Suite (component: Price List). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Site Hub product of Oracle E-Business Suite (component: Site Hierarchy Flows). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the PeopleSoft Enterprise CC Common Application Objects product of Oracle PeopleSoft (component: Activity Guide Composer). Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/ODBC). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in Oracle Application Express (component: General). Rated medium severity (CVSS 4.9), this vulnerability is remotely exploitable. No vendor patch available.
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated high severity (CVSS 7.5). No vendor patch available.
Vulnerability in the Oracle Installed Base product of Oracle E-Business Suite (component: User Interface). Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Hyperion BI+ product of Oracle Hyperion (component: UI and Visualization). Rated low severity (CVSS 3.0), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: Web Server). Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Product Hub product of Oracle E-Business Suite (component: Item Catalog). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Java VM component of Oracle Database Server. Rated low severity (CVSS 3.1), this vulnerability is remotely exploitable. No vendor patch available.
Vulnerability in the Oracle Process Manufacturing Product Development product of Oracle E-Business Suite (component: Quality Manager Specification). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the PeopleSoft Enterprise FIN Expenses product of Oracle PeopleSoft (component: Expenses). Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 5.3). No vendor patch available.
Vulnerability in the MySQL Client product of Oracle MySQL (component: Client: mysqldump). Rated low severity (CVSS 3.8), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Oracle Service Bus product of Oracle Fusion Middleware (component: OSB Core Functionality). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Telemetry). Rated low severity (CVSS 2.2), this vulnerability is remotely exploitable.
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Telemetry). Rated low severity (CVSS 2.2), this vulnerability is remotely exploitable.
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Database Core component of Oracle Database Server. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Query). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Enterprise Command Center Framework product of Oracle E-Business Suite (component: Diagnostics). Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Service Bus product of Oracle Fusion Middleware (component: OSB Core Functionality). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle BI Publisher product of Oracle Analytics (component: Layout Templates). Rated high severity (CVSS 7.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Enterprise Manager for Fusion Middleware product of Oracle Fusion Middleware (component: WebLogic Mgmt). Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. No vendor patch available.
Vulnerability in the Oracle Enterprise Manager Fusion Middleware Control product of Oracle Fusion Middleware (component: FMW Control Plugin). Rated high severity (CVSS 7.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Oracle Global Lifecycle Management FMW Installer product of Oracle Fusion Middleware (component: Cloning). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Certain HP DesignJet products may be vulnerable to credential reflection which allow viewing SMTP server credentials. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Sakai is a Collaboration and Learning Environment. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Sensitive information manipulation due to improper authorization. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An unauthenticated remote attacker can get read access to files in the "/tmp" directory due to missing authentication. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The devices contain two hard coded user accounts with hardcoded passwords that allow an unauthenticated remote attacker for full control of the affected devices. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An unauthenticated remote attacker can execute OS commands via UDP on the device due to missing authentication. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The devices are vulnerable to session hijacking due to insufficient entropy in its session ID generation algorithm. 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.
Enterprise Cloud Database from Ragic does not authenticate access to specific functionality, allowing unauthenticated remote attackers to use this functionality to obtain any user's session cookie. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The WP 2FA with Telegram plugin for WordPress is vulnerable to Two-Factor Authentication Bypass in versions up to, and including, 3.0. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The WP 2FA with Telegram plugin for WordPress is vulnerable to Authentication Bypass in versions up to, and including, 3.0. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
OpenCanary, a multi-protocol network honeypot, directly executed commands taken from its config file. Rated medium severity (CVSS 5.8), this vulnerability is low attack complexity. This Incorrect Authorization vulnerability could allow attackers to bypass authorization checks to access restricted resources.
An issue in Hideez com.hideez 2.7.8.3 allows a remote attacker to obtain sensitive information via the firmware update process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in Plug n Play Camera com.starvedia.mCamView.zwave 5.5.1 allows a remote attacker to obtain sensitive information via the firmware update process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An Insecure Direct Object Reference (IDOR) vulnerability in KubeSphere 4.x before 4.1.3 and 3.x through 3.4.1 and KubeSphere Enterprise 4.x before 4.1.3 and 3.x through 3.5.0 allows low-privileged. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
In Splunk Enterprise versions below 9.2.3 and 9.1.6, and Splunk Secure Gateway versions on Splunk Cloud Platform versions below 3.4.259, 3.6.17, and 3.7.0, a low-privileged user that does not hold. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In Splunk Enterprise versions 9.3.0, 9.2.3, and 9.1.6, a low-privileged user that does not hold the "admin" or "power" Splunk roles could view images on the machine that runs Splunk Enterprise by. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In Splunk Enterprise versions below 9.3.1, and 9.2.0 versions below 9.2.3, and Splunk Cloud Platform versions below 9.2.2403.103, 9.1.2312.200, 9.1.2312.110 and 9.1.2308.208, a low-privileged user. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Apache ActiveMQ Artemis allows access to diagnostic information and controls through MBeans, which are also exposed through the authenticated Jolokia endpoint. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity.
The affected product lacks an authentication check when sending commands to the server via the Moxa service. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
QUIC in HAProxy 3.1.x before 3.1-dev7, 3.0.x before 3.0.5, and 2.9.x before 2.9.11 allows opening a 0-RTT session with a spoofed IP address. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Zendesk before 2024-07-02 allows remote attackers to read ticket history via e-mail spoofing, because Cc fields are extracted from incoming e-mail messages and used to grant additional authorization. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Order Attachments for WooCommerce plugin for WordPress is vulnerable to unauthorized limited arbitrary file uploads due to a missing capability check on the wcoa_add_attachment AJAX action in. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. This Missing Authorization vulnerability could allow attackers to access resources or perform actions without proper authorization checks.
The ImagePress - Image Gallery plugin for WordPress is vulnerable to unauthorized modification and loss of data due to a missing capability check on the 'ip_delete_post' and 'ip_update_post_title'. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Read more By Adam plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the deleteRm() function in all versions up to, and including, 1.1.8. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The Bridge Core plugin for WordPress is vulnerable to unauthorized modification of data or loss of data due to a missing capability check on the 'import_action' and 'install_plugin_per_demo'. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
An issue in C-CHIP (com.cchip.cchipamaota) v.1.2.8 allows a remote attacker to obtain sensitive information via the firmware update process. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in Revic Optics Revic Ops (us.revic.revicops) 1.12.5 allows a remote attacker to obtain sensitive information via the firmware update process. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in SWITCHBOT INC SwitchBot (com.theswitchbot.switchbot) 5.0.4 allows a remote attacker to obtain sensitive information via the firmware update process. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An Incorrect Access Control issue in SAMPMAX com.sampmax.homemax 2.1.2.7 allows a remote attacker to obtain sensitive information via the firmware update process. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in GIANT MANUFACTURING CO., LTD RideLink (tw.giant.ridelink) 2.0.7 allows a remote attacker to obtain sensitive information via the firmware update process. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
LEDVANCE com.ledvance.smartplus.eu 2.1.10 allows a remote attacker to obtain sensitive information via the firmware update process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in Shelly com.home.shelly 1.0.4 allows a remote attacker to obtain sensitive information via the firmware update process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in Plug n Play Camera com.ezset.delaney 1.2.0 allows a remote attacker to obtain sensitive information via the firmware update process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in Fermax Asia Pacific Pte Ltd com.fermax.vida 2.4.6 allows a remote attacker to obtain sensitve information via the firmware update process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in WoFit v.7.2.3 allows a remote attacker to obtain sensitive information via the firmware update process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in almando GmbH Almando Play APP (com.almando.play) 1.8.2 allows a remote attacker to obtain sensitive information via the firmware update process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue in BURG-WCHTER KG de.burgwachter.keyapp.app 4.5.0 allows a remote attacker to obtain sensitve information via the firmware update process. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Quick Facts
- Typical Severity
- CRITICAL
- Category
- auth
- Total CVEs
- 32590