Name: CVE-2026-88807: Heap-based Buffer Overflow
Creator: Rapid7
Published: 2026-09-21T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-88807, CWE-122, CVSS 8.9, EPSS 0.0026

A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.

CVSS Details

CVSS 4.0 Base Score: 8.9 (HIGH)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Amazon_linux_2023	—	Upgrade libXrender-debuginfoUpgrade libXrenderUpgrade libXrender-develUpgrade libXrender-debugsource	Oct 13, 2026	Sep 21, 2026
Redhat_linux	—	No solution exists	Sep 24, 2026	Sep 21, 2026

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CVSS Details

Covered by Rapid7

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