{"schema":"threatline.record/2","record":{"id":"CVE-2026-93520","aliases":[],"summary":"X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write","details":"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.","categories":["Unclassified"],"product":"xorg-x11-server","vendor":"x.org","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93520","source_modified_at":"2026-10-28T14:59:50.140Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"xorg-x11-server","vendor":"x.org","versions":[{"status":"affected","version":"0","lessThan":"21.1.25","versionType":"rpm"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93520","source_modified_at":"2026-10-28T14:59:50.140Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"xwayland","vendor":"x.org","versions":[{"status":"affected","version":"0","lessThan":"24.1.14","versionType":"rpm"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93520","source_modified_at":"2026-10-28T14:59:50.140Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"xorg-x11-server","ecosystem":null},"version":"21.1.25","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93520","source_modified_at":"2026-10-28T14:59:50.140Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"xwayland","ecosystem":null},"version":"24.1.14","basis":"first unaffected version stated in the CVE record"}],"cvss":7.8,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T14:59:50.140Z","modified_at":"2026-10-28T14:59:50.140Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93520","fetched_at":"2026-10-28T15:55:58.673066Z","source_modified_at":"2026-10-28T14:59:50.140Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://gitlab.freedesktop.org/xorg/xserver/-/commit/b941a473e06f26a407a9adb15759be79f7418e86","tags":["patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-28T14:59:50.140Z","content_hash":"c7babd2cbd173da5f4a7dba6f2cf3bd394f1007bd0feee146591f9e51d4010c9"}}