{"id":"CVE-2026-93520","aliases":[],"title":"X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write","titleSource":"suse","descriptionSource":"suse","products":[{"vendor":"x.org","name":"xorg-x11-server","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"21.1.25","versionType":"rpm"}],"defaultStatus":"unaffected","source":"suse","url":"https://www.cve.org/CVERecord?id=CVE-2026-93520"},{"vendor":"x.org","name":"xwayland","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"24.1.14","versionType":"rpm"}],"defaultStatus":"unaffected","source":"suse","url":"https://www.cve.org/CVERecord?id=CVE-2026-93520"}],"remediation":[],"description":"A heap buffer overflow caused by mismatching size calculations between XkbAllocNames 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context.","severity":"high","score":7.8,"published":"2026-10-28T14:59:50.140Z","modified":"2026-10-28T14:59:50.140Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://gitlab.freedesktop.org/xorg/xserver/-/commit/b941a473e06f26a407a9adb15759be79f7418e86"],"sources":[{"name":"CVE","id":"CVE-2026-93520","modified":"2026-10-28T14:59:50.140Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93520"}],"assessments":[{"source":"suse","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T04:55:31.812Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-28T15:25:37.978Z","attemptedAt":"2026-10-28T15:25:37.978Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-10-28T15:25:37.981Z","attemptedAt":"2026-10-28T15:25:37.981Z"},{"source":"EUVD","status":"refresh-failed","attemptedAt":"2026-10-28T15:25:37.216Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-28T15:25:36.979Z","attemptedAt":"2026-10-28T15:25:36.979Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-93520","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93520","modified":"2026-10-28T15:21:55.940","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-10-28T15:25:37.978Z"}]}