What’s Vulnerable › Vulnerabilities
CVE-2026-88807: libXrender RenderQueryPictFormats Reply Heap-based Buffer Overflow
- Severity: high (CVSS 8.9 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-21 · updated 2026-09-22
- Weakness: CWE-122
Description
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.
Affected products
- X.org libXrender: before 0.9.13 — fixed in 0.9.13
How to fix
Upgrade to a fixed version: X.org libXrender 0.9.13. Check the vendor advisory for mitigations.
References
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