{"id":"CVE-2026-86973","kind":"vulnerability","aliases":["CVE-2026-86973"],"related":[],"title":"Safari and iOS: crafted web content crashes the browser process","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in Safari 27.2, iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2. Processing maliciously crafted web content may lead to an unexpected process crash.","summary":"An out-of-bounds read in Safari and related Apple OS components can be triggered by maliciously crafted web content. The sources say it causes an unexpected process crash, with no reported code execution.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["apple-devices","ios","ipados","macos","safari","vendor"],"not_affected_if":["already-patched"],"how_to_check":"- Check the installed Safari version in Safari > About Safari, or the iOS/iPadOS version in Settings > General > About, and compare it to the fixed versions.\n- Check the macOS version in Apple menu > About This Mac.","fix":"- Update Safari to `27.2` or later, or iOS and iPadOS to `26.7.2` or `27.2`, and macOS to `27.2` (Golden Gate).","status":"open","published_at":"2026-10-26T21:20:35+00:00","first_seen_at":"2026-10-26T21:55:22+00:00","triaged_at":"2026-10-26T21:56:36+00:00","updated_at":"2026-10-26T21:56:36+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-26T21:56:36Z","model":"claude-haiku-5-5","output":{"fix":"- Update Safari to `27.2` or later, or iOS and iPadOS to `26.7.2` or `27.2`, and macOS to `27.2` (Golden Gate).","reach":"internet","title":"Safari and iOS: crafted web content crashes the browser process","impact":"low","summary":"An out-of-bounds read in Safari and related Apple OS components can be triggered by maliciously crafted web content. The sources say it causes an unexpected process crash, with no reported code execution.","category":"vendor","nicknames":[],"who_cares":["safari","ios","ipados","macos","apple-devices"],"confidence":0.6,"needs_auth":"no","worst_case":"Browser process crashes when a malicious web page is processed.","analyst_note":"","how_to_check":"- Check the installed Safari version in Safari > About Safari, or the iOS/iPadOS version in Settings > General > About, and compare it to the fixed versions.\n- Check the macOS version in Apple menu > About This Mac.","needs_analyst":false,"not_affected_if":["already-patched"],"who_is_affected":"Users who browse the web in Safari or other WebKit-based apps on the listed Apple platforms before the fixed versions. The sources describe a crash from processing crafted web content, and do not describe server-side or developer-only exposure. Devices already on the fixed versions are not affected.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"low"},"cost_usd":0.000583,"input_tokens":3312,"output_tokens":503,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-86973':13A,16A '26.7.2':80C,83C '27.2':78C,85C,88C,92C 'address':67C 'appl':18B,35B 'apple-devic':17B 'bound':29B,64C,70C 'browser':9A 'caus':50B 'check':71C 'code':58B 'compon':37B 'content':6A,45B,97C 'craft':4A,43B,95C 'crash':7A,54B,104C 'cve':11A,14A 'devic':19B 'execut':59B 'fix':75C 'gate':91C 'golden':90C 'improv':69C 'io':3A,20B,79C,84C 'ipado':21B,82C,87C 'issu':73C 'lead':99C 'maco':22B,89C 'malici':42B,94C 'may':98C 'os':36B 'out-of-bound':26B,61C 'process':10A,53B,93C,103C 'read':30B,65C 'relat':34B 'report':57B 'safari':1A,23B,32B,77C 'say':48B 'sourc':47B 'trigger':40B 'unexpect':52B,102C 'vendor':24B 'web':5A,44B,96C","nicknames":[],"mitigations":[],"who_affected":"Users who browse the web in Safari or other WebKit-based apps on the listed Apple platforms before the fixed versions. The sources describe a crash from processing crafted web content, and do not describe server-side or developer-only exposure. Devices already on the fixed versions are not affected.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-26T21:20:35+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-86973","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86973","severity":null,"published_at":"2026-10-26T21:20:35+00:00","modified_at":"2026-10-26T21:20:35+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"}