CVE-2011-4151: Mit Kerberos 5

High severity, CVSS 7.8. EPSS: 3.5% chance of exploitation in the next 30 days.

The krb5_db2_lockout_audit function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4, when the db2 (aka Berkeley DB) back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, a different vulnerability than CVE-2011-1528.

Affected products

• Mit Kerberos 5: version 1.8 only; version 1.8.1 only; version 1.8.2 only; version 1.8.3 only; version 1.8.4 only

Published 2011-10-20. Last modified 2026-06-16.