CVE-2026-93543
Out-of-bounds read in libXi's XI2 class parser
x.org libXi
CVSS
7.4HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 14% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 1.8.4libXiCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
Text from CVE List
Affected versions 1
- libXiaffected: all versions before 1.8.4CVE List