{"id":"CVE-2026-112550","kind":"vulnerability","aliases":["CVE-2026-112550"],"related":[],"title":"Apple macOS: type confusion flaw lets an app crash the system","description":"A type confusion issue was addressed with improved memory handling. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. An app may be able to cause a denial-of-service.","summary":"A type confusion bug in macOS memory handling can be triggered by an app, per the Apple advisory text. The sources say an attacker can cause a denial of service, not code execution.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["apple","endpoints","infrastructure","macos"],"not_affected_if":["already-patched-macos"],"how_to_check":"- Run `sw_vers -productVersion` and compare against the fixed builds listed in the advisory.\n- Check the installed version under System Settings > General > Software Update.","fix":"- Update macOS to `27.2` (Golden Gate), `15.8.2` (Sequoia), or `26.7.2` (Tahoe), per the fixed versions named in the description.","status":"open","published_at":"2026-10-26T21:17:48+00:00","first_seen_at":"2026-10-26T21:20:27+00:00","triaged_at":"2026-10-26T21:28:01+00:00","updated_at":"2026-10-26T21:28:01+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-10-26T21:28:01Z","model":"claude-haiku-5-5","output":{"fix":"- Update macOS to `27.2` (Golden Gate), `15.8.2` (Sequoia), or `26.7.2` (Tahoe), per the fixed versions named in the description.","reach":"local","title":"Apple macOS: type confusion flaw lets an app crash the system","impact":"low","summary":"A type confusion bug in macOS memory handling can be triggered by an app, per the Apple advisory text. The sources say an attacker can cause a denial of service, not code execution.","category":"infrastructure","nicknames":[],"who_cares":["macos","apple","endpoints"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Denial of service: an app can crash or hang the system","analyst_note":"Confirm the attack vector and whether the fixed macOS builds are published on Apple's security releases page; the NVD entry gives little detail.","how_to_check":"- Run `sw_vers -productVersion` and compare against the fixed builds listed in the advisory.\n- Check the installed version under System Settings > General > Software Update.","needs_analyst":true,"not_affected_if":["already-patched-macos"],"who_is_affected":"Mac fleets and developer machines on the affected macOS branches are in scope, since the flaw is in the operating system. The sources do not describe specific configurations or features that widen exposure, so any unpatched Mac on those branches should be considered in scope. Machines already on a fixed release can skip it.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000594,"input_tokens":3277,"output_tokens":533,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-112550':14A,17A '-2026':13A,16A '15.8.2':76C '26.7.2':79C '27.2':73C 'abl':84C 'address':60C 'advisori':39B 'app':8A,35B,81C 'appl':1A,18B,38B 'attack':45B 'bug':25B 'caus':47B,86C 'code':53B 'confus':4A,24B,57C 'crash':9A 'cve':12A,15A 'denial':49B,89C 'denial-of-servic':88C 'endpoint':19B 'execut':54B 'fix':68C 'flaw':5A 'gate':72C 'golden':71C 'handl':29B,64C 'improv':62C 'infrastructur':20B 'issu':58C,66C 'let':6A 'maco':2A,21B,27B,70C,74C,77C 'may':82C 'memori':28B,63C 'per':36B 'say':43B 'sequoia':75C 'servic':51B,91C 'sourc':42B 'system':11A 'taho':78C 'text':40B 'trigger':32B 'type':3A,23B,56C","nicknames":[],"mitigations":[],"who_affected":"Mac fleets and developer machines on the affected macOS branches are in scope, since the flaw is in the operating system. The sources do not describe specific configurations or features that widen exposure, so any unpatched Mac on those branches should be considered in scope. Machines already on a fixed release can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-26T21:17:48+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-112550","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112550","severity":null,"published_at":"2026-10-26T21:17:48+00:00","modified_at":"2026-10-26T21:17:48+00:00","first_seen_at":"2026-10-26T21:20:27+00:00","fetched_at":"2026-10-26T21:20:27+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"}