CVE-2026-88806: libX11 XkbGetMap Reply Heap-based Buffer Overflow

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-22

Affected Products (1)

Other

• 21888-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-22: Information published.