CVE-2026-56002 | THREATINT

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.

PUBLISHED Reserved 2026-06-18 | Published 2026-07-08 | Updated 2026-07-09 | Assigner suse

HIGH: 8.5CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-122 Heap-based buffer overflow

Product status

Default status

unaffected

Any version before 2.0.8

affected

Credits

Anonymous working with Trend Micro Zero Day Initiative. finder

References

gitlab.freedesktop.org/...0b1d84a690b819bb27b1439968811a3674 patch

www.openwall.com/lists/oss-security/2026/07/08/1 vendor-advisory

cve.org (CVE-2026-56002)

nvd.nist.gov (CVE-2026-56002)

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