Overview
What is CVE-2026-88807?
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.
CVE intelligence
CVE-2026-88807
Vulnerability intelligence
8.9HIGHCVSS out of 10
What this means
Review the available evidence
CVE-2026-88807 and is rated High severity with a CVSS score of 8.9. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
CISA KEVNot listedBased on the latest collected catalog
EPSS0.3%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships