{"id":"CVE-2026-86959","kind":"vulnerability","aliases":["CVE-2026-86959"],"related":[],"title":"Apple iOS and macOS: crafted image crashes a process via input validation","description":"An input validation issue was addressed with improved input validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Processing a maliciously crafted image may lead to unexpected process termination.","summary":"Apple's operating systems mishandle a maliciously crafted image, causing a process to terminate unexpectedly. The sources describe a crash (denial of service), not code execution or data access.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["apple","infrastructure","ios","ipados","macos"],"not_affected_if":["already-updated"],"how_to_check":"- Check the device OS version in Settings > General > About (iOS/iPadOS) or About This Mac (macOS) against the fixed versions below\n- unknown for any other check, the sources do not say","fix":"- Update iOS and iPadOS to `26.7` or `27`\n- Update macOS Tahoe to `26.7`, macOS Sequoia to `15.8`, or macOS Golden Gate to `27`","status":"open","published_at":"2026-10-20T01:17:28+00:00","first_seen_at":"2026-10-23T21:57:19+00:00","triaged_at":"2026-10-25T05:04:58+00:00","updated_at":"2026-10-25T05:04:58+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-25T05:04:58Z","model":"claude-haiku-5-5","output":{"fix":"- Update iOS and iPadOS to `26.7` or `27`\n- Update macOS Tahoe to `26.7`, macOS Sequoia to `15.8`, or macOS Golden Gate to `27`","reach":"unknown","title":"Apple iOS and macOS: crafted image crashes a process via input validation","impact":"low","summary":"Apple's operating systems mishandle a maliciously crafted image, causing a process to terminate unexpectedly. The sources describe a crash (denial of service), not code execution or data access.","category":"infrastructure","nicknames":[],"who_cares":["apple","ios","ipados","macos"],"confidence":0.6,"needs_auth":"unknown","worst_case":"A process crashes when it processes a crafted image.","analyst_note":"Check Apple's security release notes for this CVE to confirm the trigger path and whether any exploitation is known; the NVD entry has no severity or CVSS data.","how_to_check":"- Check the device OS version in Settings > General > About (iOS/iPadOS) or About This Mac (macOS) against the fixed versions below\n- unknown for any other check, the sources do not say","needs_analyst":true,"not_affected_if":["already-updated"],"who_is_affected":"Devices running the affected iOS, iPadOS, or macOS builds that open or process images. The sources do not describe any server-side or configuration-specific exposure. unknown whether a particular app or service is the trigger.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000598,"input_tokens":3309,"output_tokens":535,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-86959':15A,18A '15.8':84C '26.7':69C,72C,87C '27':74C,77C,81C 'access':52B 'address':58C 'appl':1A,19B,24B 'caus':33B 'code':48B 'craft':5A,31B,91C 'crash':7A,43B 'cve':13A,16A 'data':51B 'denial':44B 'describ':41B 'execut':49B 'fix':66C 'gate':80C 'golden':79C 'imag':6A,32B,92C 'improv':60C 'infrastructur':20B 'input':11A,54C,61C 'io':2A,21B,68C,73C 'ipado':22B,71C,76C 'issu':56C,64C 'lead':94C 'maco':4A,23B,78C,82C,85C 'malici':30B,90C 'may':93C 'mishandl':28B 'oper':26B 'process':9A,35B,88C,97C 'sequoia':83C 'servic':46B 'sourc':40B 'system':27B 'taho':86C 'termin':37B,98C 'unexpect':38B,96C 'valid':12A,55C,62C 'via':10A","nicknames":[],"mitigations":[],"who_affected":"Devices running the affected iOS, iPadOS, or macOS builds that open or process images. The sources do not describe any server-side or configuration-specific exposure. unknown whether a particular app or service is the trigger.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T01:17:28+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-86959","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86959","severity":null,"published_at":"2026-10-20T01:17:28+00:00","modified_at":"2026-10-20T15:03:59+00:00","first_seen_at":"2026-10-23T21:57:19+00:00","fetched_at":"2026-10-23T22:28:57+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}