CVE-2007-3999: Mit Kerberos 5

High severity, CVSS 10.0. EPSS: 10.9% chance of exploitation in the next 30 days.

Stack-based buffer overflow in the svcauth_gss_validate function in lib/rpc/svc_auth_gss.c in the RPCSEC_GSS RPC library (librpcsecgss) in MIT Kerberos 5 (krb5) 1.4 through 1.6.2, as used by the Kerberos administration daemon (kadmind) and some third-party applications that use krb5, allows remote attackers to cause a denial of service (daemon crash) and probably execute arbitrary code via a long string in an RPC message.

Affected products

• Mit Kerberos 5: version 1.4 only; version 1.4.1 only; version 1.4.2 only; version 1.4.3 only; version 1.4.4 only; version 1.5 only; …

Published 2007-09-05. Last modified 2026-06-16.