The Local Security Authority Subsystem Service (LSASS) in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly process authentication requests, which allows local users to gain privileges via a request with a crafted length, aka "LSASS Length Validation Vulnerability."

A local authentication bypass vulnerability in HPE System Management Homepage for Windows and Linux version prior to v7.6.1 was found.

Unspecified vulnerability in Microsoft Internet Information Services (IIS) 5.1 on Windows XP SP3, when directory-based Basic Authentication is enabled, allows remote attackers to bypass intended access restrictions and execute ASP files via a crafted request, aka "Directory Authentication Bypass Vulnerability."

An interaction between Microsoft Outlook Web Access (OWA) with RSA SecurID allows local users to bypass the SecurID authentication for a previous user via several submissions of an OWA Authentication request with the proper OWA password for the previous user, which is eventually accepted by OWA.

There is a difficult to exploit improper authentication issue in the Home application for Esri Portal for ArcGIS versions 11.2 and below on Windows and Linux, and ArcGIS Enterprise 11.1 and below on Kubernetes which, under unique circumstances, could potentially allow a remote, unauthenticated attacker to compromise the confidentiality, integrity, and availability of the software.

The Secure Channel (aka SChannel) authentication component in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008, when certificate authentication is used, does not properly validate the client's key exchange data in Transport Layer Security (TLS) handshake messages, which allows remote attackers to spoof authentication by crafting a TLS packet based on knowledge of the certificate but not the private key, aka "SChannel Spoofing Vulnerability."

In some cases, Service Pack 4 for Windows NT 4.0 can allow access to network shares using a blank password, through a problem with a null NT hash value.

Windows NT does not properly download a system policy if the domain user logs into the domain with a space at the end of the domain name.

Windows NT Terminal Server performs extra work when a client opens a new connection but before it is authenticated, allowing for a denial of service.

Adobe FrameMaker Publishing Server versions 2022 and earlier are affected by an Improper Authentication vulnerability that could result in a Security feature bypass. An unauthenticated attacker can abuse this vulnerability to access the API and leak default admin's password. Exploitation of this issue does not require user interaction.

Adobe FrameMaker Publishing Server versions 2022.1 and earlier are affected by an Improper Authentication vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass authentication mechanisms and gain unauthorized access. Exploitation of this issue does not require user interaction.

Windows Kerberos Security Feature Bypass Vulnerability

Microsoft Authenticator Elevation of Privilege Vulnerability

Improper authentication in Windows NTLM allows an authorized attacker to elevate privileges over a network.

Improper authentication in Azure Stack allows an unauthorized attacker to disclose information over a network.

Microsoft Exchange Server Elevation of Privilege Vulnerability

The Internet Authentication Service (IAS) in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol (PEAP) authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed request, aka "Internet Authentication Service Memory Corruption Vulnerability."

Bot Framework SDK Information Disclosure Vulnerability

Microsoft Internet Explorer before 8 uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an "SSL tampering" attack.

Microsoft Internet Explorer before 8 displays a cached certificate for a (1) 4xx or (2) 5xx CONNECT response page returned by a proxy server, which allows man-in-the-middle attackers to spoof an arbitrary https site by letting a browser obtain a valid certificate from this site during one request, and then sending the browser a crafted 502 response page upon a subsequent request.

Microsoft Internet Explorer 8, and possibly other versions, detects http content in https web pages only when the top-level frame uses https, which allows man-in-the-middle attackers to execute arbitrary web script, in an https site's context, by modifying an http page to include an https iframe that references a script file on an http site, related to "HTTP-Intended-but-HTTPS-Loadable (HPIHSL) pages."

The WebDAV extension in Microsoft Internet Information Services (IIS) 5.1 and 6.0 allows remote attackers to bypass URI-based protection mechanisms, and list folders or read, create, or modify files, via a %c0%af (Unicode / character) at an arbitrary position in the URI, as demonstrated by inserting %c0%af into a "/protected/" initial pathname component to bypass the password protection on the protected\ folder, aka "IIS 5.1 and 6.0 WebDAV Authentication Bypass Vulnerability," a different vulnerability than CVE-2009-1122.

The WebDAV extension in Microsoft Internet Information Services (IIS) 5.0 on Windows 2000 SP4 does not properly decode URLs, which allows remote attackers to bypass authentication, and possibly read or create files, via a crafted HTTP request, aka "IIS 5.0 WebDAV Authentication Bypass Vulnerability," a different vulnerability than CVE-2009-1535.

Azure IPAM (IP Address Management) is a lightweight solution developed on top of the Azure platform designed to help Azure customers manage their IP Address space easily and effectively. By design there is no write access to customers' Azure environments as the Service Principal used is only assigned the Reader role at the root Management Group level. Until recently, the solution lacked the validation of the passed in authentication token which may result in attacker impersonating any privileged user to access data stored within the IPAM instance and subsequently from Azure, causing an elevation of privilege. This vulnerability has been patched in version 3.0.0.

SMU versions prior to 14.8.7825.01 are susceptible to unintended information disclosure, through URL manipulation. Authenticated users in a Storage administrative role are able to access HNAS configuration backup and diagnostic data, that would normally be barred to that specific administrative role.

Windows DPAPI (Data Protection Application Programming Interface) Spoofing Vulnerability

Windows Power Management Service Information Disclosure Vulnerability

A DCOM object in Helppane.exe in Microsoft Windows 7 SP1; Windows Server 2008 R2; Windows 8.1; Windows Server 2012 Gold and R2; Windows RT 8.1; Windows 10 Gold, 1511, and 1607; and Windows Server 2016 allows local users to gain privileges via a crafted application, aka "Windows HelpPane Elevation of Privilege Vulnerability."

An elevation of privilege vulnerability exists when Windows improperly handles authentication requests, aka "Microsoft Windows Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

An elevation of privilege vulnerability exists when Skype for Andriod fails to properly handle specific authentication requests, aka "Skype for Android Elevation of Privilege Vulnerability." This affects Skype 8.35.

A Security Feature Bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated, aka "ASP.NET Security Feature Bypass Vulnerability." This affects ASP.NET, ASP.NET Core 1.1, ASP.NET Core 1.0, ASP.NET Core 2.0, ASP.NET MVC 5.2.

IBM Cognos Controller 10.4.0, 10.4.1, and 10.4.2 could allow a remote attacker to bypass security restrictions, caused by improper validation of authentication cookies. IBM X-Force ID: 190847.

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

On April 18th 2025, Microsoft announced Exchange Server Security Changes for Hybrid Deployments and accompanying non-security Hot Fix. Microsoft made these changes in the general interest of improving the security of hybrid Exchange deployments. Following further investigation, Microsoft identified specific security implications tied to the guidance and configuration steps outlined in the April announcement. Microsoft is issuing CVE-2025-53786 to document a vulnerability that is addressed by taking the steps documented with the April 18th announcement. Microsoft strongly recommends reading the information, installing the April 2025 (or later) Hot Fix and implementing the changes in your Exchange Server and hybrid environment.

vRealize Operations for Horizon Adapter (6.7.x prior to 6.7.1 and 6.6.x prior to 6.6.1) has an improper trust store configuration leading to authentication bypass. An unauthenticated remote attacker who has network access to vRealize Operations, with the Horizon Adapter running, may be able to bypass Adapter authentication.

IBM Spectrum Protect Operations Center 8.1.0.000 through 8.1.10.and 7.1.0.000 through 7.1.11 could allow a remote attacker to obtain sensitive information, caused by improper authentication of a websocket endpoint. By using known tools to subscribe to the websocket event stream, an attacker could exploit this vulnerability to obtain sensitive information. IBM X-Force ID: 188993.

Windows Kerberos Elevation of Privilege Vulnerability

Improper authentication for some Intel Unison software may allow an authenticated user to potentially enable escalation of privilege via network access.

BigTree 4.2.23 on Windows, when Advanced or Simple Rewrite routing is enabled, allows remote attackers to bypass authentication via a ..\ substring, as demonstrated by a launch.php?bigtree_htaccess_url=admin/images/..\ URI.

SecureCore Standard Edition Version 2.x allows an attacker to bypass the product 's authentication to log in to a Windows PC.

The Microsoft Azure Active Directory Passport (aka Passport-Azure-AD) library 1.x before 1.4.6 and 2.x before 2.0.1 for Node.js does not recognize the validateIssuer setting, which allows remote attackers to bypass authentication via a crafted token.

Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability

Denial of service due to unauthenticated API endpoint. The following products are affected: Acronis Agent (Windows, macOS, Linux) before build 30161.

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Use of Default Password vulnerability in ABB RCCMD on Windows, Linux, MacOS allows Try Common or Default Usernames and Passwords.This issue affects RCCMD: before 4.40 230207.

A vulnerability in Trend Micro Apex One and Trend Micro Apex One as a Service could allow an attacker to bypass the product's login authentication by falsifying request parameters on affected installations.

IBM Security Verify Governance, Identity Manager 10.0.1 software component could allow an authenticated user to modify or cancel any other user's access request using man-in-the-middle techniques. IBM X-Force ID: 231096.  

Sensitive information disclosure due to improper authentication. The following products are affected: Acronis Cyber Protect 15 (Windows, Linux) before build 29486, Acronis Cyber Backup 12.5 (Windows, Linux) before build 16545.

Windows Defender Remote Credential Guard Elevation of Privilege Vulnerability

[Spoofable identity claims] Authentication Bypass by Assumed-Immutable Data in Azure DevOps allows an unauthorized attacker to elevate privileges over a network.