CVE-2025-26596

HIGH EPSS 30.8%
Published Feb 25, 20251y ago · Modified Jun 25, 20264d ago
7.8 CVSS 3.1
High
Find Similar
Published Feb 25, 2025 1y ago
Last Modified Jun 25, 2026 4d ago

Description

A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
30.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 6

VendorProductVersionRange
tigervnctigervnc*any
x.orgx_server* <21.1.16
x.orgxwayland* <24.1.6
redhatenterprise_linux7.0any
redhatenterprise_linux8.0any
redhatenterprise_linux9.0any

References 18

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.