Is CVE-2026-56002 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-56002?

CVE-2026-56002 has a CVSS v3 severity of HIGH (8.5).

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CVE-2026-56002

Description

A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8 allows attackers authenticated as X client to execute code within the X server.