Description
A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.
Published: 2026-09-21
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Mon, 21 Sep 2026 13:45:00 +0000

Type Values Removed Values Added
Description A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.
Title libX11 XkbGetMap Reply Heap-based Buffer Overflow
First Time appeared X.org
X.org libx11
Weaknesses CWE-122
CPEs cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:*
Vendors & Products X.org
X.org libx11
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2026-09-21T14:48:16.632Z

Reserved: 2026-09-10T08:35:07.010Z

Link: CVE-2026-88806

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-21T14:17:22.273

Modified: 2026-09-21T14:17:22.273

Link: CVE-2026-88806

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-122

    Heap-based Buffer Overflow