CVE-2026-88806

7.5 highEPSS 0.2%

High (7.5). EPSS 0.2% chance of exploitation in the next 30 days.

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.

Severity

7.5 high

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-31)
CWE: CWE-122
Published: 2026-09-21
Modified: 2026-09-22
Record from: the NVD, synced 2026-10-19