CVE-2025-26596CWE-787

Xorg: xwayland: heap overflow in xkbwritekeysyms()

High · published February 25, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
37.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00438 · 37.0th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2025-02-25T15:54Z
EPSS history
Timeline
  • 25 FEB 15:54Z
    Xorg: xwayland: heap overflow in xkbwritekeysyms()
    cvelistv5