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 (33056)
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity.
Vulnerability in the Oracle Financial Services Analytical Applications Infrastructure product of Oracle Financial Services Applications (component: Object Migration). Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Elastic Search). Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle FLEXCUBE Universal Banking product of Oracle Financial Services Applications (component: Infrastructure). Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle FLEXCUBE Universal Banking product of Oracle Financial Services Applications (component: Infrastructure). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Oracle FLEXCUBE Universal Banking product of Oracle Financial Services Applications (component: Infrastructure). Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Rated medium severity (CVSS 6.4).
Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Login). Rated medium severity (CVSS 5.7), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Printing). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Login). Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Oracle Application Testing Suite product of Oracle Enterprise Manager (component: Oracle Flow Builder). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Email Center product of Oracle E-Business Suite (component: Message Display). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Email Center product of Oracle E-Business Suite (component: Message Display). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Email Center product of Oracle E-Business Suite (component: Message Display). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Email Center product of Oracle E-Business Suite (component: Message Display). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle iSupport product of Oracle E-Business Suite (component: Others). Rated medium severity (CVSS 4.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle iSupport product of Oracle E-Business Suite (component: Others). Rated medium severity (CVSS 4.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle iSupport product of Oracle E-Business Suite (component: Others). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Filesystem). Rated medium severity (CVSS 4.6), this vulnerability is low attack complexity.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: PIA Core Technology). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle iSupport product of Oracle E-Business Suite (component: Others). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle iSupport product of Oracle E-Business Suite (component: Others). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle iSupport product of Oracle E-Business Suite (component: Others). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle CRM Technical Foundation product of Oracle E-Business Suite (component: Preferences). Rated medium severity (CVSS 4.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Solaris product of Oracle Systems (component: X Window System). Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. Public exploit code available.
Vulnerability in the Java SE product of Oracle Java SE (component: JSSE). Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, no authentication required.
Vulnerability in the Oracle CRM Technical Foundation product of Oracle E-Business Suite (component: Preferences). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle CRM Technical Foundation product of Oracle E-Business Suite (component: Preferences). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle CRM Technical Foundation product of Oracle E-Business Suite (component: Preferences). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Retail Customer Management and Segmentation Foundation product of Oracle Retail Applications (component: Promotions). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Retail Customer Management and Segmentation Foundation product of Oracle Retail Applications (component: Internal Operations). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Command Line Interface). Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Connector Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Oracle Management Service). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Job System). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Connector Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager for Oracle Database product of Oracle Enterprise Manager (component: Discovery Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager for Oracle Database product of Oracle Enterprise Manager (component: Target Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Host Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager for Oracle Database product of Oracle Enterprise Manager (component: Enterprise Config Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager for Oracle Database product of Oracle Enterprise Manager (component: Change Manager - web based). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Application Service Level Mgmt). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: System Monitoring). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Configuration Standard Framewk). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Connector Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: System Monitoring). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Application Service Level Mgmt). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Extensibility Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Extensibility Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Host Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Cloud Control Manager - OMS). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Job System). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Connector Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Metrics Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Event Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Enterprise Config Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Enterprise Config Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Enterprise Config Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Enterprise Config Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Discovery Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Enterprise Manager Repository). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Oracle Management Service). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager for Fusion Middleware product of Oracle Enterprise Manager (component: APM Mesh). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Global EM Framework). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Enterprise Config Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Enterprise Config Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Enterprise Config Management). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Enterprise Manager Base Platform product of Oracle Enterprise Manager (component: Repository). Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: PIA Core Technology). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: PIA Core Technology). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Field Service product of Oracle E-Business Suite (component: Wireless). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Tree Manager). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Security). Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable, no authentication required.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Elastic Search). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Hospitality Cruise Materials Management product of Oracle Hospitality Applications (component: MMS All). Rated medium severity (CVSS 4.2), this vulnerability is no authentication required.
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Activity Guide). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle One-to-One Fulfillment product of Oracle E-Business Suite (component: Call Phone Number Page). Rated medium severity (CVSS 4.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle CRM Technical Foundation product of Oracle E-Business Suite (component: Message Hooks). Rated medium severity (CVSS 4.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle GraalVM Enterprise Edition product of Oracle GraalVM (component: GraalVM Compiler). Rated medium severity (CVSS 5.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Networking). Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, no authentication required.
Vulnerability in the Oracle AutoVue product of Oracle Supply Chain (component: Security). Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Oracle Web Applications Desktop Integrator product of Oracle E-Business Suite (component: Application Service). Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Security). Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required.
Vulnerability in the Oracle Human Resources product of Oracle E-Business Suite (component: Hierarchy Diagrammers). Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Oracle Human Resources product of Oracle E-Business Suite (component: Hierarchy Diagrammers). Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, low attack complexity.
Vulnerability in the Java SE product of Oracle Java SE (component: JavaFX). Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required.
Quick Facts
- Typical Severity
- CRITICAL
- Category
- auth
- Total CVEs
- 33056