CVE-2026-40356

In MIT Kerberos 5 aka krb5 before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gssacceptseccontext on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, possibly causing the process t...

Exploit for Improper Input Validation in Microsoft

🚨 CVE-2026-33826: Windows Active Directory Remote Code Executi...

CVE-2019-12175

In Zeek Network Security Monitor formerly known as Bro before 2.6.2, a NULL pointer dereference in the Kerberos aka KRB protocol parser leads to DoS because a case-type index is mishandled...

EUVD-2019-3824

Malware in sbrugna...

EUVD-2018-8607

Malware in sbrugna...

EUVD-2003-0135

Malware in sbrugna...

EUVD-2017-2740

Malware in sbrugna...

EUVD-2003-0134

Malware in sbrugna...

Linux Distros Unpatched Vulnerability : CVE-2019-12175

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Zeek Network Security Monitor formerly known as Bro before 2.6.2, a NULL pointer dereference in the Kerberos aka KRB protocol parser leads to DoS because a...

Krb5: kerberos rc4-hmac-md5 checksum vulnerability enabling message spoofing via md5 collisions

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krb5: Kerberos RC4-HMAC-MD5 Checksum Vulnerability Enabling Message Spoofing via MD5 Collisions

A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This ma...

RHEL 9 : krb5 (RHSA-2025:13664)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:13664 advisory. Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending password...

CLSA-2025-1751895517 krb5: Fix of CVE-2025-3576

CVE-2025-3576: possible spoofing of GSSAPI-protected messages using RC4-HMAC-MD5...

OESA-2025-1135 krb5 security update

Kerberos is a network authentication protocol. It is designed to provide strong authentication for client/server applications by using secret-key cryptography. Security Fixes: In MIT krb5 release 1.7 and later with incremental propagation enabled, an authenticated attacker can cause kadmind to...

PT-2025-6308 · Microsoft · Windows

Name of the Vulnerable Software and Affected Versions: Windows affected versions not specified Description: The issue is related to a denial-of-service vulnerability in the implementation of the Kerberos protocol in Windows operating systems, caused by insufficient input validation. This could...

OESA-2024-2380 krb5 security update

Kerberos is a network authentication protocol. It is designed to provide strong authentication for client/server applications by using secret-key cryptography. Security Fixes: CVE-2024-3596...

In MIT Kerberos 5 (aka krb5) before 1.21.3 an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token causing the unwrapped token to appear truncated to the application.

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389-ds-base: potential denial of service via specially crafted kerberos AS-REQ request

A flaw was found in 389-ds-base. A specially-crafted LDAP query can potentially cause a failure on the directory server, leading to a denial of service...

Anomaly detection in certificate-based TGT requests

One of the most complex yet effective methods of gaining unauthorized access to corporate network resources is an attack using forged certificates. Attackers create such certificates to fool the Key Distribution Center KDC into granting access to the target companys network. An example of such an...

PT-2023-2394 · Microsoft · Windows

Name of the Vulnerable Software and Affected Versions: Windows affected versions not specified Description: The issue is related to an insecure implementation of the Kerberos protocol in Windows, specifically involving the use of the RC4 encryption algorithm with the MD4 hash function. This can b...