CVE-2026-109093
X.Org Server XTestFakeInput Valuator Stack Out-Of-Bounds Write
Description
A stack buffer overflow in ProcXTestFakeInput DeviceValuator handling in X.Org xwayland before 24.1.15 and X server before 21.1.26 could be used by authenticated clients to crash or execute code in the X server.
INFO
Published Date :
Nov. 13, 2026, 2:23 p.m.
Last Modified :
Nov. 13, 2026, 2:23 p.m.
Remotely Exploit :
No
Source :
suse
Affected Products
The following products are affected by CVE-2026-109093
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 404e59f5-483d-4b8a-8e7a-e67604dd8afb |
Solution
- Update xwayland to version 24.1.15 or later.
- Update X server to version 21.1.26 or later.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-109093 vulnerability anywhere in the article.