CVE-2015-2694: Mit Kerberos 5

Medium severity, CVSS 5.8. EPSS: 2.8% chance of exploitation in the next 30 days.

The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c.

Affected products

• Mit Kerberos 5: version 1.12 only; version 1.12.1 only; version 1.12.2 only; version 1.12.3 only; version 1.13 only; version 1.13.1 only

Published 2015-05-25. Last modified 2026-06-17.