{"id":"CVE-2026-65356","kind":"vulnerability","aliases":["CVE-2026-65356"],"related":[],"title":"Apple macOS: an app can read sensitive user data via access flaw","description":"An access issue was addressed with improved access controls. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to access sensitive user data.","summary":"Apple fixed an access control issue in macOS that lets an app reach sensitive user data it should not be able to read. The sources give no further technical detail on the affected component.","severity":"medium","cvss":5.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["apple","endpoints","infrastructure","macos"],"not_affected_if":["patched-macos"],"how_to_check":"- Check the installed macOS version with `sw_vers -productVersion` and compare it with the fixed releases listed in the fix field.","fix":"- Update macOS to Golden Gate 27, Sequoia 15.8, or Tahoe 26.7, or a later build of the same release line.","status":"open","published_at":"2026-10-20T01:17:16+00:00","first_seen_at":"2026-10-23T21:57:19+00:00","triaged_at":"2026-10-25T04:12:42+00:00","updated_at":"2026-10-25T04:12:42+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-25T04:12:42Z","model":"claude-haiku-5-5","output":{"fix":"- Update macOS to Golden Gate 27, Sequoia 15.8, or Tahoe 26.7, or a later build of the same release line.","reach":"local","title":"Apple macOS: an app can read sensitive user data via access flaw","impact":"medium","summary":"Apple fixed an access control issue in macOS that lets an app reach sensitive user data it should not be able to read. The sources give no further technical detail on the affected component.","category":"infrastructure","nicknames":[],"who_cares":["macos","apple","endpoints"],"confidence":0.6,"needs_auth":"unknown","worst_case":"A local app reads sensitive user data it should not reach.","analyst_note":"Find Apple's security content page for this CVE to confirm which component and data types are affected and whether a user action is needed.","how_to_check":"- Check the installed macOS version with `sw_vers -productVersion` and compare it with the fixed releases listed in the fix field.","needs_analyst":true,"not_affected_if":["patched-macos"],"who_is_affected":"Mac machines running macOS versions earlier than the fixed releases can be affected, since any installed app may be able to reach sensitive user data. Organizations that keep all Macs on the fixed releases or later can skip it. The sources do not say which data stores or entitlements are involved.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00057,"input_tokens":3269,"output_tokens":486,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-65356':15A,18A '15.8':77C '26.7':80C '27':74C 'abl':43B,85C 'access':11A,26B,58C,64C,87C 'address':61C 'affect':55B 'app':4A,34B,82C 'appl':1A,19B,23B 'compon':56B 'control':27B,65C 'cve':13A,16A 'data':9A,38B,90C 'detail':52B 'endpoint':20B 'fix':24B,69C 'flaw':12A 'gate':73C 'give':48B 'golden':72C 'improv':63C 'infrastructur':21B 'issu':28B,59C,67C 'let':32B 'maco':2A,22B,30B,71C,75C,78C 'may':83C 'reach':35B 'read':6A,45B 'sensit':7A,36B,88C 'sequoia':76C 'sourc':47B 'taho':79C 'technic':51B 'user':8A,37B,89C 'via':10A","nicknames":[],"mitigations":[],"who_affected":"Mac machines running macOS versions earlier than the fixed releases can be affected, since any installed app may be able to reach sensitive user data. Organizations that keep all Macs on the fixed releases or later can skip it. The sources do not say which data stores or entitlements are involved.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T01:17:16+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-65356","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65356","severity":null,"published_at":"2026-10-20T01:17:16+00:00","modified_at":"2026-10-20T15:17:29+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"}