All vulnerabilities
CVE-2026-94285

Out-of-bounds read in libX11's byte-oriented codeset parser

x.org libX11
Open in ThreatlineRecord JSON
CVSS
5.1Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.11%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.8.14Fixed versionCVE List
Published28 Sep 2026Updated 30 Sep 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

An out-of-bounds read in libX11's byte-oriented codeset parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.

Text from CVE List

Affected versions 1

  • libX11affected: all versions before 1.8.14CVE List

References 1