CVE-2014-9421: Mit Kerberos 5

High severity, CVSS 9.0. EPSS: 6.2% chance of exploitation in the next 30 days.

The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly handle partial XDR deserialization, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via malformed XDR data, as demonstrated by data sent to kadmind.

Affected products

• Mit Kerberos 5: version 1.11 only; version 1.11.1 only; version 1.11.2 only; version 1.11.3 only; version 1.11.4 only; version 1.11.5 only; …

Published 2015-02-19. Last modified 2026-06-17.