{"id":"CVE-2026-93520","revision":"fba1d4bff1ae4a4d819441c9a64fbed7","records":[{"revision":"fba1d4bff1ae4a4d819441c9a64fbed7","observedAt":"2026-10-28T16:46:48.767+00:00","statement":{"source":"cve-program","id":"CVE-2026-93520","aliases":[],"title":"X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write","description":"A heap buffer overflow caused by mismatching size calculations between\u00A0XkbAllocNames and  ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.","state":0,"publishedAt":"2026-10-28T14:59:50.14+00:00","modifiedAt":"2026-10-28T14:59:50.14+00:00","affected":[{"ecosystem":"Vendor product","name":"xorg-x11-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"x.org\",\n                    \"product\": \"xorg-x11-server\",\n                    \"packageName\": \"xorg-x11-server\",\n                    \"repo\": \"https://gitlab.freedesktop.org/xorg/xserver\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"21.1.25\",\n                            \"versionType\": \"rpm\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"},{"ecosystem":"Vendor product","name":"xwayland","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"x.org\",\n                    \"product\": \"xwayland\",\n                    \"packageName\": \"xwayland\",\n                    \"repo\": \"https://gitlab.freedesktop.org/xorg/xserver\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"24.1.14\",\n                            \"versionType\": \"rpm\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://gitlab.freedesktop.org/xorg/xserver/-/commit/b941a473e06f26a407a9adb15759be79f7418e86"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93520","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93520","identifiers":["CVE-2026-93520"]},"retained":false,"historicalAffected":[]}],"coverage":[]}