CVE Watch3 nov 2026

CVE-2026-121604

wlroots before 0.20.2 contains an out-of-bounds read vulnerability in read_surface_class() in xwayland/xwm.c that allows local X11 clients t

CVSS

3.3

Bajo

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 3 nov 2026 · Última mod.: 3 nov 2026 · CWE-125

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

wlroots before 0.20.2 contains an out-of-bounds read vulnerability in read_surface_class() in xwayland/xwm.c that allows local X11 clients to leak compositor heap memory. Attackers can set a WM_CLASS property with a NUL-terminated instance but unterminated class, exposing over-read heap bytes as the window class or app_id over IPC.

Referencias oficiales

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