{"id":"CVE-2026-86871","aliases":[],"title":"An integer underflow was addressed with improved input validation.","titleSource":"apple","descriptionSource":"apple","products":[{"vendor":"Apple","name":"macOS","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"15.8","versionType":"custom"},{"version":"0","status":"affected","lessThan":"26.7","versionType":"custom"},{"version":"0","status":"affected","lessThan":"27","versionType":"custom"}],"source":"apple","url":"https://www.cve.org/CVERecord?id=CVE-2026-86871"}],"remediation":[],"description":"An integer underflow was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker with control of a network file server may be able to cause unexpected system termination.","severity":"unknown","score":null,"published":"2026-10-20T00:50:43.774Z","modified":"2026-10-26T20:39:46.185Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://support.apple.com/en-us/149035","https://support.apple.com/en-us/149042","https://support.apple.com/en-us/149043"],"sources":[{"name":"CVE","id":"CVE-2026-86871","modified":"2026-10-26T20:39:46.185Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-86871"}],"assessments":[],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T20:00:30.919Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}