Is CVE-2011-1527 being actively exploited?

CVE-2011-1527 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-1527?

CVE-2011-1527 has a CVSS 2.0 base score of 7.8 (HIGH).

CVE-2011-1527

HIGH · CVSS 7.8EPSS 3.7%EU EUVD

The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.

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: 3.7% (90th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-1528)
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-2011-1528 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

mit / kerberos 5
mit / kerberos 5

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629558
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt(Vendor Advisory)
http://www.kb.cert.org/vuls/id/659251(US Government Resource)
http://www.mandriva.com/security/advisories?name=MDVSA-2011:159
http://www.redhat.com/support/errata/RHSA-2011-1379.html(Vendor Advisory)

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

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