Is CVE-2011-4151 being actively exploited?

CVE-2011-4151 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-4151?

CVE-2011-4151 has a CVSS 2.0 base score of 7.8 (HIGH).

CVE-2011-4151

HIGH · CVSS 7.8EPSS 3.5%EU EUVD

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.

Key facts

CVSS score: 7.8 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-20
EPSS score: 3.5% (89th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-4094)
Published: October 20, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-4094 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

mit / kerberos 5
mit / kerberos 5
mit / kerberos 5
mit / kerberos 5
mit / kerberos 5

References

http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt(Vendor Advisory)
http://www.kb.cert.org/vuls/id/659251(US Government Resource)
https://exchange.xforce.ibmcloud.com/vulnerabilities/70891

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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