CVE-2026-94285: Out-of-bounds read in libX11's byte-oriented codeset parser

Overview

Severity

Medium (CVSS 5.1)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-29

EPSS Score

0.11% (percentile: 1.2%)

Affected Products (1)

Other

• 21888-17084

Revision History

• 2026-09-29: Information published.