What is CVE-2015-8308?

CVE-2015-8308 is a high-severity vulnerability in Lxdm Project, classified under Improper Authentication. CVSS score: 7.8/10. Published 2017-08-24.

How severe is CVE-2015-8308?

High severity. CVSS v3 base score is 7.8 out of 10.

Auth bypass in Lxdm Project

CVE-2015-8308

LXDM before 0.5.2 did not start X server with -auth, which allows local users to bypass authentication with X connections.

Vulnerability class: Broken Authentication

Published 2017-08-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% 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

Lxdm Project

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
www.openwall.com/lists/oss-security/2015/11/20/6 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2015-8308?: CVE-2015-8308 is a high-severity vulnerability in Lxdm Project, classified under Improper Authentication. CVSS score: 7.8/10. Published 2017-08-24.
How severe is CVE-2015-8308?: High severity. CVSS v3 base score is 7.8 out of 10.