Vulnerability in GNOME Display Manager

CVE-2013-4169

GNOME Display Manager (gdm) before 2.21.1 allows local users to change permissions of arbitrary directories via a symlink attack on /tmp/.X11-unix/.

Published 2013-09-10 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 6.9 (Medium). Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.004 (28.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

GNOME Display Manager — versions 0.7, 1.0, 2.0

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

bugzilla.redhat.com/bugzilla/show_bug.cgi (Patch)
secunia.com/advisories/54661 (Vendor Advisory, third-party-advisory)
rhn.redhat.com/errata/RHSA-2013-1213.html (vendor-advisory, Vendor Advisory)