CVE-2011-1529

Name: CVE-2011-1529
Creator: NVD / NIST
Published: 2011-10-20T21:55:00.98+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.05%

Last modified Jun 16, 2026

CVE-2011-1529 is a vulnerability of currently unknown severity. The lookup_lockout_policy function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the db2 (aka Berkeley DB) or LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that trigger certain process_as_req errors.. EPSS estimates a 4.05% chance of exploitation in the next 30 days.

Description

The lookup_lockout_policy function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the db2 (aka Berkeley DB) or LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that trigger certain process_as_req errors.

Metrics

EPSS Probability

4.05%

89.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Mit	Kerberos 5	1.8
Mit	Kerberos 5	1.8.1
Mit	Kerberos 5	1.8.2
Mit	Kerberos 5	1.8.3
Mit	Kerberos 5	1.8.4
Mit	Kerberos 5	1.9
Mit	Kerberos 5	1.9.1

References

Timeline

Published: Oct 20, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-1529?

How severe is CVE-2011-1529?

Severity scoring for CVE-2011-1529 is pending analysis. The EPSS model estimates a 4.05% probability of exploitation in the next 30 days.

How do I fix CVE-2011-1529?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-1529?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST