CVSS 8.5 (high) · published 2026-11-13
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.
Weakness: CWE-121
Source: NVD CVE-2026-109093
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