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Authentication Bypass

auth CRITICAL

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 (33275)

EPSS 0% CVSS 8.3
HIGH This Week

The failover ipsec implementation in Cisco Adaptive Security Appliance (ASA) Software 9.1 before 9.1(6), 9.2 before 9.2(3.3), and 9.3 before 9.3(3) does not properly validate failover communication. Rated high severity (CVSS 8.3), this vulnerability is low attack complexity. No vendor patch available.

Cisco Authentication Bypass Adaptive Security Appliance Software
NVD
EPSS 0% CVSS 5.0
MEDIUM This Month

Cisco ASR 9000 devices with software 5.3.0.BASE do not recognize that certain ACL entries have a single-host constraint, which allows remote attackers to bypass intended network-resource access. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Cisco Authentication Bypass Ios Xr +6
NVD
EPSS 5% CVSS 10.0
CRITICAL Act Now

The puppet manifests in the Red Hat openstack-puppet-modules package before 2014.2.13-2 uses a default password of CHANGEME for the pcsd daemon, which allows remote attackers to execute arbitrary. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Red Hat Authentication Bypass Openstack
NVD
EPSS 0% CVSS 1.9
LOW POC Monitor

The Code Signing implementation in Apple OS X before 10.10.3 does not properly validate signatures, which allows local users to bypass intended access restrictions via a crafted bundle, a different. Rated low severity (CVSS 1.9). Public exploit code available and no vendor patch available.

Apple Authentication Bypass Mac Os X
NVD
EPSS 0% CVSS 1.9
LOW POC Monitor

The Code Signing implementation in Apple OS X before 10.10.3 does not properly validate signatures, which allows local users to bypass intended access restrictions via a crafted bundle, a different. Rated low severity (CVSS 1.9). Public exploit code available and no vendor patch available.

Apple Authentication Bypass Mac Os X
NVD
EPSS 20% 5.2 CVSS 7.8
HIGH POC KEV THREAT Act Now

The XPC implementation in Admin Framework in Apple OS X before 10.10.3 allows local users to bypass authentication and obtain admin privileges via unspecified vectors. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.

Authentication Bypass Apple
NVD Exploit-DB VulDB
EPSS 0% CVSS 4.4
MEDIUM This Month

The Telephony component in Apple iOS before 8.3 allows attackers to bypass a sandbox protection mechanism and access unintended telephone capabilities via a crafted app. Rated medium severity (CVSS 4.4). No vendor patch available.

Apple Authentication Bypass Iphone Os
NVD
EPSS 2% CVSS 5.0
MEDIUM This Month

The kernel in Apple iOS before 8.3, Apple OS X before 10.10.3, and Apple TV before 7.2 does not properly determine whether an IPv6 packet had a local origin, which allows remote attackers to bypass. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Apple Authentication Bypass Iphone Os +2
NVD
EPSS 0% CVSS 6.8
MEDIUM PATCH This Month

Siemens SIMATIC HMI Basic Panels 2nd Generation before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC HMI Comfort Panels before WinCC (TIA Portal) 13 SP1 Upd2, SIMATIC WinCC Runtime Advanced before WinCC. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. This Improper Authentication vulnerability could allow attackers to bypass authentication mechanisms to gain unauthorized access.

Siemens Authentication Bypass Wincc
NVD
EPSS 0% CVSS 4.3
MEDIUM This Month

The HTTP Alternative Services feature in Mozilla Firefox before 37.0.1 allows man-in-the-middle attackers to bypass an intended X.509 certificate-verification step for an SSL server by specifying. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.

Mozilla Authentication Bypass Ubuntu Linux +2
NVD
EPSS 2% CVSS 7.5
HIGH PATCH This Week

FastBack Mount in IBM Tivoli Storage Manager FastBack 6.1.x before 6.1.11.1 allows remote attackers to execute arbitrary code by connecting to the Mount port. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.

IBM RCE Authentication Bypass +1
NVD
EPSS 1% CVSS 5.0
MEDIUM This Month

EMC PowerPath Virtual Appliance (aka vApp) before 2.0 has default passwords for the (1) emcupdate and (2) svcuser accounts, which makes it easier for remote attackers to obtain potentially sensitive. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Powerpath Virtual Appliance
NVD
EPSS 4% CVSS 5.0
MEDIUM POC This Month

Citrix NetScaler AppFirewall, as used in NetScaler 10.5, allows remote attackers to bypass intended firewall restrictions via a crafted Content-Type header, as demonstrated by the. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Citrix Authentication Bypass Netscaler
NVD Exploit-DB
EPSS 0% CVSS 5.0
MEDIUM This Month

Inductive Automation Ignition 7.7.2 uses MD5 password hashes, which makes it easier for context-dependent attackers to obtain access via a brute-force attack. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Ignition
NVD
EPSS 0% CVSS 4.0
MEDIUM This Month

Inductive Automation Ignition 7.7.2 allows remote authenticated users to bypass a brute-force protection mechanism by using different session ID values in a series of HTTP requests. Rated medium severity (CVSS 4.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Ignition
NVD
EPSS 0% CVSS 6.4
MEDIUM This Month

Inductive Automation Ignition 7.7.2 does not terminate a session upon a logout action, which allows remote attackers to bypass intended access restrictions by leveraging an unattended workstation. Rated medium severity (CVSS 6.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Ignition
NVD
EPSS 0% CVSS 9.0
CRITICAL Act Now

Hospira MedNet before 6.1 uses a hardcoded cleartext password to control SQL database authorization, which allows remote authenticated users to bypass intended access restrictions by leveraging. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Mednet
NVD GitHub
EPSS 1% CVSS 7.5
HIGH This Week

The XcListener in SAP Afaria 7.0.6001.5 does not properly restrict access, which allows remote attackers to have unspecified impact via a crafted request, aka SAP Security Note 2134905. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SAP Authentication Bypass Afaria
NVD
EPSS 0% CVSS 4.3
MEDIUM This Month

Mozilla Firefox before 37.0 does not require an HTTPS session for lightweight theme add-on installations, which allows man-in-the-middle attackers to bypass an intended user-confirmation requirement. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.

Mozilla Authentication Bypass Firefox +2
NVD
EPSS 0% CVSS 7.5
HIGH POC This Week

The WPML plugin before 3.1.9 for WordPress does not properly handle multiple actions in a request, which allows remote attackers to bypass nonce checks and perform arbitrary actions via a request. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

WordPress Authentication Bypass Wpml
NVD
EPSS 2% CVSS 6.5
MEDIUM This Month

DokuWiki before 2014-05-05d and before 2014-09-29c does not properly check permissions for the ACL plugins, which allows remote authenticated users to gain privileges and add or delete ACL rules via. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Dokuwiki
NVD GitHub
EPSS 0% CVSS 5.0
MEDIUM This Month

The Personal Email Manager (PEM) in Websense TRITON AP-EMAIL before 8.0.0 allows attackers to have unspecified impact via a brute force attack. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Triton Ap Email
NVD
EPSS 0% CVSS 3.5
LOW Monitor

Drupal 6.x before 6.35 and 7.x before 7.35 allows remote authenticated users to reset the password of other accounts by leveraging an account with the same password hash as another account and a. Rated low severity (CVSS 3.5), this vulnerability is remotely exploitable. No vendor patch available.

Authentication Bypass Debian Linux Drupal
NVD
EPSS 1% CVSS 10.0
CRITICAL PATCH Act Now

IBM General Parallel File System (GPFS) 3.4 before 3.4.0.32, 3.5 before 3.5.0.24, and 4.1 before 4.1.0.7 in certain cipherList configurations allows remote attackers to bypass authentication and. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. This Improper Authentication vulnerability could allow attackers to bypass authentication mechanisms to gain unauthorized access.

IBM Authentication Bypass General Parallel File System
NVD
EPSS 0% CVSS 6.4
MEDIUM This Month

The default configuration of Cisco Small Business IP phones SPA 300 7.5.5 and SPA 500 7.5.5 does not properly support authentication, which allows remote attackers to read audio-stream data or. Rated medium severity (CVSS 6.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Cisco Authentication Bypass Spa500 Firmware +14
NVD
EPSS 0% CVSS 5.0
MEDIUM This Month

The Management Interface on Cisco Content Services Switch (CSS) 11500 devices 8.20.4.02 and earlier allows remote attackers to bypass intended restrictions on local-network device access via crafted. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Cisco Authentication Bypass Content Services Switch 11500 Firmware
NVD
EPSS 1% CVSS 5.0
MEDIUM POC This Month

eCryptfs 104 and earlier uses a default salt to encrypt the mount passphrase, which makes it easier for attackers to obtain user passwords via a brute force attack. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Authentication Bypass Ecryptfs Utils
NVD
EPSS 0% CVSS 1.9
LOW Monitor

Race condition in the handle_to_path function in fs/fhandle.c in the Linux kernel through 3.19.1 allows local users to bypass intended size restrictions and trigger read operations on additional. Rated low severity (CVSS 1.9). No vendor patch available.

Race Condition Linux Authentication Bypass +2
NVD
EPSS 0% CVSS 6.8
MEDIUM This Month

HP Operations Manager i Management Pack 1.x before 1.01 for SAP allows local users to execute OS commands by leveraging SAP administrative privileges. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.

HP SAP Authentication Bypass +1
NVD
EPSS 0% CVSS 7.2
HIGH This Week

Cisco Virtual TelePresence Server Software does not properly restrict use of the serial port, which allows local users to execute arbitrary OS commands as root by leveraging vSphere controller. Rated high severity (CVSS 7.2), this vulnerability is low attack complexity. No vendor patch available.

Cisco Authentication Bypass Telepresence Server Software
NVD
EPSS 1% CVSS 5.0
MEDIUM PATCH This Month

Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before 11.2.202.451 on Linux allows remote attackers to bypass intended file-upload restrictions. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.

Authentication Bypass Adobe Microsoft +1
NVD
EPSS 8% CVSS 10.0
CRITICAL Act Now

The management interface in Cisco TelePresence Video Communication Server (VCS) and Cisco Expressway before X7.2.4, X8 before X8.1.2, and X8.2 before X8.2.2 and Cisco TelePresence Conductor before. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Cisco Authentication Bypass Expressway Software +2
NVD
EPSS 9% CVSS 5.0
MEDIUM This Month

Microsoft Exchange Server 2013 SP1 and Cumulative Update 7 allows remote attackers to spoof meeting organizers via unspecified vectors, aka "Exchange Forged Meeting Request Spoofing Vulnerability.". Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Microsoft Authentication Bypass Exchange Server
NVD
EPSS 1% CVSS 2.1
LOW PATCH Monitor

The Task Scheduler in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly constrain. Rated low severity (CVSS 2.1), this vulnerability is low attack complexity.

Authentication Bypass Microsoft Windows 7 +6
NVD
EPSS 0% CVSS 6.4
MEDIUM This Month

RT (aka Request Tracker) before 4.0.23 and 4.2.x before 4.2.10 allows remote attackers to hijack sessions via an RSS feed URL. Rated medium severity (CVSS 6.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Fedora Request Tracker
NVD
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Smart Proxy (aka Smart-Proxy and foreman-proxy) in Foreman before 1.5.4 and 1.6.x before 1.6.2 does not validate SSL certificates, which allows remote attackers to bypass intended authentication and. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.

Authentication Bypass Openstack Foreman
NVD GitHub
EPSS 0% CVSS 4.3
MEDIUM This Month

The Authentication Proxy feature in Cisco IOS does not properly handle invalid AAA return codes from RADIUS and TACACS+ servers, which allows remote attackers to bypass authentication in. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.

Apple Cisco Authentication Bypass +1
NVD
EPSS 1% CVSS 5.0
MEDIUM This Month

The BestWebSoft Google Captcha (aka reCAPTCHA) plugin before 1.13 for WordPress allows remote attackers to bypass the CAPTCHA protection mechanism and obtain administrative access via unspecified. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

WordPress Google Authentication Bypass +1
NVD
EPSS 1% CVSS 5.0
MEDIUM This Month

The BestWebSoft Captcha plugin before 4.0.7 for WordPress allows remote attackers to bypass the CAPTCHA protection mechanism and obtain administrative access via unspecified vectors. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

WordPress Authentication Bypass Captcha
NVD
EPSS 3% CVSS 5.0
MEDIUM PATCH This Month

net/netfilter/nf_conntrack_proto_generic.c in the Linux kernel before 3.18 generates incorrect conntrack entries during handling of certain iptables rule sets for the SCTP, DCCP, GRE, and UDP-Lite. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.

Linux Authentication Bypass Linux Kernel +14
NVD GitHub
EPSS 0% CVSS 6.8
MEDIUM This Month

The Integrated Management Controller (IMC) in Cisco Unified Computing System (UCS) 1.4(7h) and earlier on C-Series servers allows remote attackers to bypass intended access restrictions by sending. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.

Cisco Authentication Bypass Unified Computing System
NVD
EPSS 0% CVSS 5.0
MEDIUM This Month

Mozilla Firefox before 36.0 does not properly recognize the equivalence of domain names with and without a trailing . Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Mozilla Authentication Bypass Opensuse +2
NVD
EPSS 0% CVSS 2.6
LOW Monitor

Mozilla Firefox before 36.0 does not properly restrict transitions of JavaScript objects from a non-extensible state to an extensible state, which allows remote attackers to bypass a Caja Compiler. Rated low severity (CVSS 2.6), this vulnerability is remotely exploitable. No vendor patch available.

Mozilla Authentication Bypass Opensuse +2
NVD
EPSS 1% CVSS 2.6
LOW Monitor

The rsaauth extension in TYPO3 4.3.0 through 4.3.14, 4.4.0 through 4.4.15, 4.5.0 through 4.5.39, and 4.6.0 through 4.6.18, when configured for the frontend, allows remote attackers to bypass. Rated low severity (CVSS 2.6), this vulnerability is remotely exploitable. No vendor patch available.

Authentication Bypass Typo3 Debian Linux
NVD
EPSS 3% CVSS 10.0
CRITICAL Act Now

Anyterm Daemon in Infoblox Network Automation NetMRI before NETMRI-23483 allows remote attackers to execute arbitrary commands with root privileges via a crafted terminal/anyterm-module request. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Netmri
NVD
EPSS 1% CVSS 6.1
MEDIUM This Month

The check_rpcsec_auth function in kadmin/server/kadm_rpc_svc.c in kadmind in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 allows remote authenticated. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable. No vendor patch available.

Authentication Bypass Kerberos 5
NVD GitHub
EPSS 92% 7.7 CVSS 9.8
CRITICAL POC KEV PATCH THREAT Act Now

The Groovy scripting engine in Elasticsearch before 1.3.8 and 1.4.x before 1.4.3 allows remote attackers to bypass the sandbox protection mechanism and execute arbitrary shell commands via a crafted. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.

Authentication Bypass Elastic
NVD Exploit-DB VulDB
EPSS 11% CVSS 8.3
HIGH POC THREAT Act Now

LG On-Screen Phone (OSP) before 4.3.010 allows remote attackers to bypass authorization via a crafted request. Rated high severity (CVSS 8.3), this vulnerability is low attack complexity. Public exploit code available and EPSS exploitation probability 10.8%.

Authentication Bypass On Screen Phone
NVD
EPSS 0% CVSS 1.9
LOW PATCH Monitor

The (1) Java GUI and (2) Web GUI components in the IBM Tivoli Storage Manager (TSM) Backup-Archive client 5.4 and 5.5 before 5.5.4.4 on AIX, Linux, and Solaris; 5.4.x and 5.5.x on Windows and z/OS;. Rated low severity (CVSS 1.9).

Microsoft Java IBM +2
NVD
EPSS 0% CVSS 4.3
MEDIUM This Month

Race condition in the object-group ACL feature in Cisco IOS 15.5(2)T and earlier allows remote attackers to bypass intended access restrictions via crafted network traffic that triggers improper. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.

Authentication Bypass Race Condition Apple +2
NVD
EPSS 37% CVSS 6.5
MEDIUM KEV PATCH THREAT Act Now

Microsoft Internet Explorer 9 through 11 allows remote attackers to bypass the ASLR protection mechanism via a crafted web site, aka "Internet Explorer ASLR Bypass Vulnerability.". Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Actively exploited in the wild (cisa kev) and EPSS exploitation probability 37.0%.

Authentication Bypass Microsoft
NVD VulDB
EPSS 2% CVSS 1.9
LOW POC PATCH Monitor

The CryptProtectMemory function in cng.sys (aka the Cryptography Next Generation driver) in the kernel-mode drivers in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2. Rated low severity (CVSS 1.9). Public exploit code available.

Authentication Bypass Microsoft Windows 7 +8
NVD Exploit-DB
EPSS 4% CVSS 3.3
LOW POC PATCH Monitor

The Group Policy Security Configuration policy implementation in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1,. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available.

Authentication Bypass Microsoft Windows 7 +8
NVD Exploit-DB
EPSS 9% CVSS 8.3
HIGH POC PATCH This Week

The UNC implementation in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows. Rated high severity (CVSS 8.3), this vulnerability is low attack complexity. Public exploit code available.

Microsoft RCE Authentication Bypass +9
NVD Exploit-DB
EPSS 0% CVSS 7.5
HIGH POC This Week

Apereo Central Authentication Service (CAS) Server before 3.5.3 allows remote attackers to conduct LDAP injection attacks via a crafted username, as demonstrated by using a wildcard and a valid. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Authentication Bypass Central Authentication Service
NVD GitHub
EPSS 1% CVSS 5.0
MEDIUM This Month

The V8ThrowException::createDOMException function in bindings/core/v8/V8ThrowException.cpp in the V8 bindings in Blink, as used in Google Chrome before 40.0.2214.111 on Windows, OS X, and Linux and. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Google Microsoft +8
NVD
EPSS 1% CVSS 5.0
MEDIUM This Month

The FTP backend in user_external in ownCloud Server before 5.0.18 and 6.x before 6.0.6 allows remote attackers to bypass intended authentication requirements via a crafted password. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Owncloud Owncloud Server
NVD
EPSS 0% CVSS 5.0
MEDIUM This Month

The user_ldap (aka LDAP user and group backend) application in ownCloud before 5.0.18, 6.x before 6.0.6, and 7.x before 7.0.3 allows remote attackers to bypass authentication via a null byte in the. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Owncloud Owncloud Server
NVD
EPSS 0% CVSS 10.0
CRITICAL Act Now

The web interface on SerVision HVG Video Gateway devices with firmware before 2.2.26a100 has a hardcoded administrative password, which makes it easier for remote attackers to obtain access via an. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Hvg Video Gateway Firmware
NVD
EPSS 1% CVSS 10.0
CRITICAL Act Now

time.htm in the web interface on SerVision HVG Video Gateway devices with firmware before 2.2.26a78 allows remote attackers to bypass authentication and obtain administrative access by leveraging a. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Hvg Video Gateway Firmware
NVD
EPSS 1% CVSS 7.5
HIGH This Week

Fortinet FortiAuthenticator 3.0.0 has a password of (1) slony for the slony PostgreSQL user and (2) www-data for the www-data PostgreSQL user, which makes it easier for remote attackers to obtain. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Fortinet PostgreSQL Authentication Bypass +1
NVD
EPSS 0% CVSS 6.8
MEDIUM This Month

Labtech before 100.237 on Linux uses world-writable permissions for root-executed scripts, which allows local users to gain privileges by modifying a script file. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.

Authentication Bypass Labtech
NVD
EPSS 0% CVSS 4.3
MEDIUM This Month

VMware vSphere Data Protection (VDP) 5.1, 5.5 before 5.5.9, and 5.8 before 5.8.1 and the proxy client in EMC Avamar Data Store (ADS) and Avamar Virtual Edition (AVE) 6.x and 7.0.x do not properly. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.

VMware Authentication Bypass Vsphere Data Protection
NVD
EPSS 0% CVSS 6.8
MEDIUM This Month

The iTunes Store component in Apple iOS before 8.1.3 allows remote attackers to bypass a Safari sandbox protection mechanism by leveraging redirection of an SSL URL to the iTunes Store. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. No vendor patch available.

Apple Authentication Bypass Iphone Os
NVD
EPSS 0% CVSS 2.1
LOW Monitor

SpotlightIndex in Apple OS X before 10.10.2 does not properly perform deserialization during access to a permission cache, which allows local users to read search results associated with other users'. Rated low severity (CVSS 2.1), this vulnerability is low attack complexity. No vendor patch available.

Deserialization Apple Authentication Bypass +1
NVD
EPSS 0% CVSS 2.1
LOW Monitor

LoginWindow in Apple OS X before 10.10.2 does not transition to the lock-screen state immediately upon being woken from sleep, which allows physically proximate attackers to obtain sensitive. Rated low severity (CVSS 2.1), this vulnerability is low attack complexity. No vendor patch available.

Apple Authentication Bypass Mac Os X
NVD
EPSS 14% CVSS 5.0
MEDIUM POC THREAT This Month

LaunchServices in Apple OS X before 10.10.2 does not properly handle file-type metadata, which allows attackers to bypass the Gatekeeper protection mechanism via a crafted JAR archive. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 14.0%.

Apple Authentication Bypass Mac Os X
NVD Exploit-DB
EPSS 0% CVSS 6.8
MEDIUM This Month

Springboard in Apple iOS before 8.1.3 does not properly validate signatures when determining whether to solicit an app trust decision from the user, which allows attackers to bypass intended. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. No vendor patch available.

Apple Authentication Bypass Iphone Os
NVD
EPSS 76% 4.8 CVSS 5.0
MEDIUM POC PATCH THREAT This Month

Unspecified vulnerability in vsftpd 3.0.2 and earlier allows remote attackers to bypass access restrictions via unknown vectors, related to deny_file parsing. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 76.1%.

Authentication Bypass Opensuse Vsftpd
NVD
EPSS 71% 4.4 CVSS 4.0
MEDIUM POC THREAT This Month

pixabay-images.php in the Pixabay Images plugin before 2.4 for WordPress does not validate hostnames, which allows remote authenticated users to write to arbitrary files via an upload URL with a host. Rated medium severity (CVSS 4.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 70.5%.

WordPress PHP Authentication Bypass +1
NVD Exploit-DB
EPSS 1% CVSS 4.3
MEDIUM This Month

components/navigation_interception/intercept_navigation_resource_throttle.cc in Google Chrome before 40.0.2214.91 on Android does not properly restrict use of intent: URLs to open an application. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.

Denial Of Service Google Authentication Bypass +1
NVD
EPSS 1% CVSS 10.0
CRITICAL PATCH Act Now

The FTP server on the Schneider Electric ETG3000 FactoryCast HMI Gateway with firmware through 1.60 IR 04 has hardcoded credentials, which makes it easier for remote attackers to obtain access via an. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. This Use of Hard-coded Credentials vulnerability could allow attackers to gain access using credentials embedded in source code.

Schneider Electric Authentication Bypass Etg3000 Factorycast Hmi Gateway Firmware +4
NVD
EPSS 0% CVSS 10.0
CRITICAL PATCH Act Now

The Schneider Electric ETG3000 FactoryCast HMI Gateway with firmware before 1.60 IR 04 stores rde.jar under the web root with insufficient access control, which allows remote attackers to obtain. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. This Missing Authentication for Critical Function vulnerability could allow attackers to access critical functionality without authentication.

Schneider Electric Authentication Bypass Etg3000 Factorycast Hmi Gateway Firmware +4
NVD
EPSS 0% CVSS 4.3
MEDIUM This Month

plasma-workspace before 5.1.95 allows remote attackers to obtain passwords via a Trojan horse Look and Feel package. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.

Authentication Bypass Plasma Workspace
NVD
EPSS 1% CVSS 7.5
HIGH This Week

MantisBT before 1.2.19 and 1.3.x before 1.3.0-beta.2 does not properly restrict access to /*/install.php, which allows remote attackers to obtain database credentials via the install parameter with. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

PHP Authentication Bypass Mantisbt
NVD
EPSS 0% CVSS 2.1
LOW Monitor

Race condition in pxz 4.999.99 Beta 3 uses weak file permissions for the output file when compressing a file before changing the permission to match the original file, which allows local users to. Rated low severity (CVSS 2.1), this vulnerability is low attack complexity. No vendor patch available.

Race Condition Authentication Bypass Pxz
NVD
EPSS 2% CVSS 5.0
MEDIUM PATCH This Month

Apache Santuario XML Security for Java 2.0.x before 2.0.3 allows remote attackers to bypass the streaming XML signature protection mechanism via a crafted XML document. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.

Authentication Bypass Java Apache +1
NVD
EPSS 1% CVSS 7.8
HIGH This Week

Ceragon FibeAir IP-10 bridges have a default password for the root account, which makes it easier for remote attackers to obtain access via a (1) HTTP, (2) SSH, (3) TELNET, or (4) CLI session. Rated high severity (CVSS 7.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Fiberair Ip 10C Fiberair Ip 10E +1
NVD
EPSS 82% 6.0 CVSS 10.0
CRITICAL POC THREAT Emergency

Phoenix Contact ProConOs and MultiProg do not require authentication, which allows remote attackers to execute arbitrary commands via protocol-compliant traffic. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 82.5%.

Authentication Bypass Multiprog Proconos Eclr
NVD Exploit-DB
EPSS 0% CVSS 5.0
MEDIUM This Month

The stateless firewall in Juniper Junos 13.3R3, 14.1R1, and 14.1R2, when using Trio-based PFE modules, does not properly match ports, which might allow remote attackers to bypass firewall rule. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Juniper Authentication Bypass Junos
NVD
EPSS 2% CVSS 10.0
CRITICAL Act Now

The customization template in Red Hat CloudForms 3.1 Management Engine (CFME) 5.3 uses a default password for the root account when a password is not specified for a new image, which allows remote. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Red Hat Authentication Bypass Cloudforms 3 1 Management Engine
NVD
EPSS 0% CVSS 7.2
HIGH This Week

GTK+ 3.10.9 and earlier, as used in cinnamon-screensaver, gnome-screensaver, and other applications, allows physically proximate attackers to bypass the lock screen by pressing the menu button. Rated high severity (CVSS 7.2), this vulnerability is low attack complexity. No vendor patch available.

Authentication Bypass Linux Mint Gtk +1
NVD GitHub
EPSS 0% CVSS 5.0
MEDIUM This Month

Cisco WebEx Meetings Server 1.5 presents the same CAPTCHA challenge for each login attempt, which makes it easier for remote attackers to obtain access via a brute-force approach of guessing. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Cisco Authentication Bypass Webex Meetings Server
NVD
EPSS 0% CVSS 2.1
LOW POC Monitor

The vdso_addr function in arch/x86/vdso/vma.c in the Linux kernel through 3.18.2 does not properly choose memory locations for the vDSO area, which makes it easier for local users to bypass the ASLR. Rated low severity (CVSS 2.1), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Linux Authentication Bypass Linux Kernel +18
NVD
EPSS 0% CVSS 5.0
MEDIUM This Month

The play/modules component in Cisco WebEx Meetings Server allows remote attackers to obtain administrator access via crafted API requests, aka Bug ID CSCuj40421. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Cisco Authentication Bypass Webex Meetings Server
NVD
EPSS 0% CVSS 5.0
MEDIUM POC This Month

VDG Security SENSE (formerly DIVA) 2.3.13 performs authentication with a password hash instead of a password, which allows remote attackers to gain login access by leveraging knowledge of a password. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Authentication Bypass Vdg Sense
NVD
EPSS 12% CVSS 4.3
MEDIUM PATCH This Month

mod_lua.c in the mod_lua module in the Apache HTTP Server 2.3.x and 2.4.x through 2.4.10 does not support an httpd configuration in which the same Lua authorization provider is used with different. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Epss exploitation probability 11.7%.

Apache Authentication Bypass Http Server +4
NVD GitHub
EPSS 0% CVSS 5.0
MEDIUM This Month

Plogger 1.0 RC1 and earlier, when the Lucid theme is used, does not assign new values for certain codes, which makes it easier for remote attackers to bypass the CAPTCHA protection mechanism via a. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Plogger
NVD
EPSS 0% CVSS 7.5
HIGH This Week

The update function in umbraco.webservices/templates/templateService.cs in the TemplateService component in Umbraco CMS before 6.0.4 does not require authentication, which allows remote attackers to. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Authentication Bypass Umbraco Cms
NVD
EPSS 0% CVSS 5.0
MEDIUM POC This Month

The Maxthon Cloud Browser application before 4.1.6.2000 for Android allows remote attackers to spoof the address bar via crafted JavaScript code that uses the history API. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Google Authentication Bypass Maxthon Cloud Browser
NVD
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Quick Facts

Typical Severity
CRITICAL
Category
auth
Total CVEs
33275

MITRE ATT&CK

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