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CVE-2026-40355

MEDIUM · CVSS 5.9 EPSS 0.10% Public Exploit

Source: NVD + CISA KEV + EPSS · Published: 2026-04-28 · Last synced: 2026-05-28

CyberRota Analysis

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Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-40355
Severity
MEDIUM
CVSS
5.9
EPSS
0.10%

Original NVD 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.