{"id":"CVE-2026-109089","title":"libXi XGetDeviceControl Control Type Mismatch Heap Buffer Overflow","summary":"A buffer overflow when handling DEVICE_RESOLUTION in libXi before 1.8.4 could overflow a heap, triggered by a malicious X server.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-122"],"vendor":"X.Org","product":"libXi","affected":["libXi < 1.8.4"],"published":"2026-10-27","updated":"2026-10-27","sourceUpdated":"2026-10-27T16:05:56.113Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109089","references":[{"url":"https://gitlab.freedesktop.org/xorg/lib/libxi/-/commit/f7836d0a0"}],"tags":["cve.org"],"ingestedAt":"2026-10-27T16:32:34.410Z","epss":0.00258,"epssPercentile":0.17605,"slug":"CVE-2026-109089","body":"## Overview\n\nA buffer overflow when handling DEVICE_RESOLUTION in libXi before 1.8.4 could overflow a heap, triggered by a malicious X server.\n\n## Affected\n\n- `libXi < 1.8.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}