Kerberos 5

3 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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Medium 5.9

CVE-2026-40355

In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_…

MIT Kerberos 5 krb5 krb5 Debian Ubuntu Azure Linux Alpine

Apr 28, 2026
Medium 5.9

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 applic…

MIT Kerberos 5 krb5 krb5 Debian Ubuntu Azure Linux Alpine

Apr 28, 2026