VULNERABILITY INTELLIGENCE

CVE-2025-26595

CVSS score7.8 HIGH
EPSS probability0.44%
CISA KEVNot currently listed
Published2025-02-25
Last modified2026-06-29
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.

Weakness classification

  • secalert@redhat.com: CWE-121
  • nvd@nist.gov: CWE-787

Primary references