CVE-2015-2694
MEDIUMEPSS 85th pctlDescription
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.
How to fix
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Elevated risk: more likely to be exploited than 85% of all known CVEs.
References
Related Vulnerabilities
Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2012-1456 | Medium | 4.3 | 100% | - | - |
| CVE-2012-1459 | Medium | 4.3 | 100% | - | Fix |
| CVE-2012-1446 | Medium | 4.3 | 100% | - | - |
| CVE-2012-1443 | Medium | 4.3 | 100% | - | - |
| CVE-2012-1442 | Medium | 4.3 | 99% | - | - |
| CVE-2012-1457 | Medium | 4.3 | 98% | - | Fix |
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.