Vulnerability Report

CVE-2011-4966

Title: Freeradius

Other

Proof Of Concept

No public PoC currently indexed for CVE-2011-4966.

CWE Category CWE-255

Published Date Mar 12, 2013

Modified Date Apr 29, 2026

Exploit Status Not Found

Score 6.0 CVSS v2.0

Exploit Probability (EPSS)

0.62%

Vulnerability Summary

CVE-2011-4966: modules/rlm_unix/rlm_unix.c in FreeRADIUS before 2.2.0, when unix mode is enabled for user authentication, does not properly check the password expiration in /etc/shadow, which allows remote authenticated users to authenticate using an expired password.

Impacted Vendors

freeradius 1

Reference Links

http://lists.opensuse.org/opensuse-updates/2013-01/msg00029.html http://lists.opensuse.org/opensuse-updates/2013-01/msg00079.html http://rhn.redhat.com/errata/RHBA-2012-0881.html http://rhn.redhat.com/errata/RHSA-2013-0134.html https://github.com/alandekok/freeradius-server/commit/1b1ec5ce75e224bd1755650c18ccdaa6dc53e605 http://lists.opensuse.org/opensuse-updates/2013-01/msg00029.html http://lists.opensuse.org/opensuse-updates/2013-01/msg00079.html http://rhn.redhat.com/errata/RHBA-2012-0881.html http://rhn.redhat.com/errata/RHSA-2013-0134.html https://github.com/alandekok/freeradius-server/commit/1b1ec5ce75e224bd1755650c18ccdaa6dc53e605

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

6.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:S/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-4966 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

March 12, 2013 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:M/Au:S/C:P/I:P/A:P

Affected Stack

No specific products linked.