Is CVE-2026-93518 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-93518?

CVE-2026-93518 has a CVSS v3 severity of HIGH (7.8).

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CVE-2026-93518

Description

An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited for crashes or potential code execution in the X server.