{"id":"CVE-2026-86991","kind":"vulnerability","aliases":["CVE-2026-86991"],"related":[],"title":"Apple iOS and macOS: crafted file can crash a process, fixed in 26.7.2 and 27.2","description":"A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2, visionOS 27.2. Processing a maliciously crafted file may lead to unexpected process termination.","summary":"A buffer overflow in Apple's software lets a maliciously crafted file terminate the process that opens it. The sources describe a crash only, with no code execution or data exposure stated.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["apple","ios","ipados","macos","vendor","visionos"],"not_affected_if":["already-updated"],"how_to_check":"- unknown","fix":"- Update iOS and iPadOS to `26.7.2` or `27.2`\n- Update macOS Tahoe to `26.7.2`, macOS Sequoia to `15.8.2`, and macOS Golden Gate to `27.2`\n- Update visionOS to `27.2`","status":"open","published_at":"2026-10-26T21:20:38+00:00","first_seen_at":"2026-10-26T21:55:22+00:00","triaged_at":"2026-10-26T21:56:24+00:00","updated_at":"2026-10-26T21:56:24+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-26T21:56:24Z","model":"claude-haiku-5-5","output":{"fix":"- Update iOS and iPadOS to `26.7.2` or `27.2`\n- Update macOS Tahoe to `26.7.2`, macOS Sequoia to `15.8.2`, and macOS Golden Gate to `27.2`\n- Update visionOS to `27.2`","reach":"unknown","title":"Apple iOS and macOS: crafted file can crash a process, fixed in 26.7.2 and 27.2","impact":"low","summary":"A buffer overflow in Apple's software lets a maliciously crafted file terminate the process that opens it. The sources describe a crash only, with no code execution or data exposure stated.","category":"vendor","nicknames":[],"who_cares":["apple","ios","ipados","macos","visionos"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Process crashes when a crafted file is processed; no code execution stated","analyst_note":"Check the Apple security release notes and the NVD entry for the affected component and file type, and whether any exploitation path beyond crash is documented.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":["already-updated"],"who_is_affected":"Owners of Apple devices running the affected iOS, iPadOS, macOS, or visionOS builds listed in the fix section. The sources do not name the specific component or file type involved, so the exact exposure is unknown.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000591,"input_tokens":3338,"output_tokens":514,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':17A,20A '-86991':18A,21A '15.8.2':90C '26.7.2':13A,75C,78C,93C '27.2':15A,80C,83C,87C,95C 'address':64C 'appl':1A,22B,32B 'bound':67C 'buffer':29B,61C 'check':68C 'code':54B 'craft':5A,38B,99C 'crash':8A,50B 'cve':16A,19A 'data':57B 'describ':48B 'execut':55B 'exposur':58B 'file':6A,39B,100C 'fix':11A,72C 'gate':86C 'golden':85C 'improv':66C 'io':2A,23B,74C,79C 'ipado':24B,77C,82C 'issu':70C 'lead':102C 'let':35B 'maco':4A,25B,84C,88C,91C 'malici':37B,98C 'may':101C 'open':44B 'overflow':30B,62C 'process':10A,42B,96C,105C 'sequoia':89C 'softwar':34B 'sourc':47B 'state':59B 'taho':92C 'termin':40B,106C 'unexpect':104C 'vendor':26B 'visiono':27B,94C","nicknames":[],"mitigations":[],"who_affected":"Owners of Apple devices running the affected iOS, iPadOS, macOS, or visionOS builds listed in the fix section. The sources do not name the specific component or file type involved, so the exact exposure is unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-26T21:20:38+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-86991","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86991","severity":null,"published_at":"2026-10-26T21:20:38+00:00","modified_at":"2026-10-26T21:20:38+00:00","first_seen_at":"2026-10-26T21:55:22+00:00","fetched_at":"2026-10-26T21:55:22+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"}