Description

In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, causing the process to terminate in parse_nego_message.

INFO

Published Date :

2026-04-28T00:00:00.000Z

Last Modified :

2026-04-28T12:53:20.352Z

Source :

mitre
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40355 vulnerability.

Vendors Products
Mit
  • Kerberos 5
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40355.

URL Resource
https://cems.fun/2026/04/27/krb5-two-unauthenticated-network-vulnerabilities.html cve-icon cve-icon cve-icon cve-icon
https://github.com/krb5/krb5/commit/2e75f0d9362fb979f5fc92829431a590a130929f cve-icon cve-icon cve-icon
https://web.mit.edu/kerberos/advisories/ cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

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