CVE-2026-11771

A flaw was found in OpenVPN. A remote attacker could exploit an off-by-one buffer write vulnerability during NTLM NT LAN Manager proxy authentication. By sending a specially crafted NTLM response from a malicious proxy server, the attacker could cause the OpenVPN client to crash, leading to a...

CVE-2026-11771

OpenVPN version 2.1.0 through 2.6.20 and 2.7alpha1 through 2.7.4 allows attackers via an off-by-one buffer write in the NTLM proxy authentication to potentially cause a crash via a crafted NTLM response from a malicious proxy server...

CVE-2026-11771

OpenVPN vulnerability CVE-2026-11771 affects OpenVPN versions 2.1.0–2.6.20 and 2.7_alpha1–2.7.4. Root cause: an off-by-one buffer write in the NTLM proxy authentication handling, which can be triggered by a crafted NTLM response from a malicious proxy server. Impact: potential crash of the OpenVP...

CVE-2026-64389

A flaw was found in the Linux kernel's ksmbd component. A remote attacker could exploit a vulnerability in the NTLMv2 authentication process to modify a session key even when authentication fails. This bypasses security checks and could potentially lead to unauthorized access or session hijacking...

CVE-2026-64431

In the Linux kernel, the following vulnerability has been resolved: ntfs: avoid calling postwritemstfixup for invalid indexblock ntfsicxibsyncwrite calls postwritemstfixup when ntfsibwrite returns an error, intending to restore the buffer after a failed write. However, ntfsibwrite returns an erro...

CVE-2026-64138

A flaw was found in the ksmbd module of the Linux kernel. This vulnerability arises from improper validation of Security Identifiers SIDs within the NT Security Descriptor smbntsd during Access Control List ACL inheritance. An attacker could exploit this to bypass intended security restrictions,...

CVE-2026-64138 ksmbd: validate SID in parent security descriptor during ACL inheritance

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smbvalidatentsdsid helper to safely validate Owner SID and Group SID inside the NT Security Descriptor smbntsd retrieved from the parent directory...

PT-2026-61455

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ksmbd module where the Owner SID and Group SID within the NT Security Descriptor smb ntsd retrieved from the parent directory are not properly validated during ACL...

CVE-2026-8919

Permissive Cross-domain Security Policy with Untrusted Domains in ASUS GameSDK allows a remote user to obtain a local user’s NTLM hash by convincing the user to visit a crafted web page that sends a request containing a UNC path to the application’s local service endpoint. This can result in...

CVE-2026-13079

A local privilege escalation vulnerability in the WatchGuard Mobile VPN with SSL client for Windows allows a local attacker to escalate their privileges to NT AUTHORITY\SYSTEM on the machine where the client is installed. This issue affects the Mobile VPN with SSL client for Windows up to and...

CVE-2026-13079

CVE-2026-13079 describes a local privilege escalation in the WatchGuard Mobile VPN with SSL client for Windows . The issue allows a local attacker to escalate to NT AUTHORITY\SYSTEM on the machine hosting the Windows client. Affected scope includes the Windows client versions up to and including ...

PT-2026-55325

Name of the Vulnerable Software and Affected Versions WatchGuard Mobile VPN with SSL client for Windows versions prior to 2026.3 Description A local privilege escalation issue allows an attacker with local access to the machine where the client is installed to elevate their privileges to NT...

CVE-2026-56766

A flaw was found in Hydra. A malicious server can exploit a stack buffer overflow vulnerability in the NTLM authentication modules by sending a specially crafted NTLM Type-2 challenge. This can lead to an overflow of a stack buffer, potentially enabling remote code execution on systems that lack...

SUSE CVE-2026-56766

Hydra through 9.7, fixed in commit 9cc84c2, contains a stack buffer overflow in NTLM authentication across SMTP, POP3, IMAP, NNTP, HTTP, HTTP-Proxy, and HTTP-Proxy-Urlenum modules when processing malicious NTLM Type-2 challenges. A malicious server can send a crafted NTLM Type-2 challenge with an...

CVE-2026-56766

Hydra through 9.7, fixed in commit 9cc84c2, contains a stack buffer overflow in NTLM authentication across SMTP, POP3, IMAP, NNTP, HTTP, HTTP-Proxy, and HTTP-Proxy-Urlenum modules when processing malicious NTLM Type-2 challenges. A malicious server can send a crafted NTLM Type-2 challenge with an...

CVE-2026-56766 Hydra - Stack Buffer Overflow in NTLM Authentication Handler

Hydra through 9.7, fixed in commit 9cc84c2, contains a stack buffer overflow in NTLM authentication across SMTP, POP3, IMAP, NNTP, HTTP, HTTP-Proxy, and HTTP-Proxy-Urlenum modules when processing malicious NTLM Type-2 challenges. A malicious server can send a crafted NTLM Type-2 challenge with an...

The vulnerability of the Windows NT OS Kernel component allows attackers to enhance their privileges.

The vulnerability of the Windows NT OS Kernel component involves overflow in the dynamic memory buffer. Exploiting this vulnerability can allow an attacker to increase their privileges...

CVE-2026-6517

Mattermost Desktop App (versions

CVE-2026-6517 Mattermost Desktop App fails to restrict the allow list of domains which NTLM credentials are passed

Mattermost Desktop App versions =6.1 5.5.13.0 fail to restrict the allow list of domains to which NTLM credentials were forwarded to in the Mattermost Desktop App which allows any user on a server without the image proxy enabled to intercept other users credentials via embedding an image that...

CVE-2026-6517 Mattermost Desktop App fails to restrict the allow list of domains which NTLM credentials are passed

Mattermost Desktop App versions =6.1 5.5.13.0 fail to restrict the allow list of domains to which NTLM credentials were forwarded to in the Mattermost Desktop App which allows any user on a server without the image proxy enabled to intercept other users credentials via embedding an image that...