What is CVE-2015-8316?

CVE-2015-8316 is a medium-severity vulnerability in Lightdm Project, classified under Improper Validation of Array Index. CVSS score: 5.9/10. Published 2017-09-06.

How severe is CVE-2015-8316?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Lightdm Project

CVE-2015-8316

Array index error in LightDM (aka Light Display Manager) 1.14.3, 1.16.x before 1.16.6 when the XDMCP server is enabled allows remote attackers to cause a denial of service (process crash) via an XDMCP request packet with no address.

Published 2017-09-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.017 (77.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Lightdm Project — versions 1.14.3, 1.16, 1.16.1

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
www.openwall.com/lists/oss-security/2015/11/22/1 (mailing-list, Mailing List, VDB Entry)
bugs.launchpad.net/lightdm/+bug/1516831 (VDB Entry, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2015-8316?: CVE-2015-8316 is a medium-severity vulnerability in Lightdm Project, classified under Improper Validation of Array Index. CVSS score: 5.9/10. Published 2017-09-06.
How severe is CVE-2015-8316?: Medium severity. CVSS v3 base score is 5.9 out of 10.