CVE-2026-93523
HIGH
NVD
CVSS Score
7.8
Severity
HIGH
Published
Oct 28, 2026
Vendor
unknown
Description
A heap buffer overflow caused by a XIPassiveUngrabDevice request with an out-of-range modifier value in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.