{"id":"CVE-2026-112536","kind":"vulnerability","aliases":["CVE-2026-112536"],"related":[],"title":"macOS: out-of-bounds write lets an app corrupt kernel memory","description":"An out-of-bounds write issue was addressed with improved bounds checking. 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 unexpected system termination or write kernel memory.","summary":"An out-of-bounds write flaw in macOS lets a local app crash the system or write kernel memory. Apple fixed it with better bounds checking in macOS Golden Gate 27.2, Sequoia 15.8.2 and Tahoe 26.7.2.","severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["endpoints","infrastructure","mac-fleet","macos"],"not_affected_if":["patched-macos"],"how_to_check":"- Run `sw_vers -productVersion` and compare against the fixed versions `27.2`, `15.8.2` and `26.7.2`.\n- Check Software Update in System Settings for pending macOS updates.","fix":"- Update macOS to `27.2` (Golden Gate), `15.8.2` (Sequoia) or `26.7.2` (Tahoe), matching the installed release line.","status":"open","published_at":"2026-10-26T21:17:46+00:00","first_seen_at":"2026-10-26T21:20:27+00:00","triaged_at":"2026-10-26T21:28:12+00:00","updated_at":"2026-10-26T21:28:12+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-26T21:28:12Z","model":"claude-haiku-5-5","output":{"fix":"- Update macOS to `27.2` (Golden Gate), `15.8.2` (Sequoia) or `26.7.2` (Tahoe), matching the installed release line.","reach":"local","title":"macOS: out-of-bounds write lets an app corrupt kernel memory","impact":"high","summary":"An out-of-bounds write flaw in macOS lets a local app crash the system or write kernel memory. Apple fixed it with better bounds checking in macOS Golden Gate 27.2, Sequoia 15.8.2 and Tahoe 26.7.2.","category":"infrastructure","nicknames":[],"who_cares":["macos","mac-fleet","endpoints"],"confidence":0.6,"needs_auth":"unknown","worst_case":"local app writes kernel memory and crashes the system","analyst_note":"Sources give no CVSS, exploitation status or technical detail; check Apple's security notes for the CVE for the exact trigger and required privileges.","how_to_check":"- Run `sw_vers -productVersion` and compare against the fixed versions `27.2`, `15.8.2` and `26.7.2`.\n- Check Software Update in System Settings for pending macOS updates.","needs_analyst":true,"not_affected_if":["patched-macos"],"who_is_affected":"Any Mac running an unpatched macOS release on one of the affected lines can be hit, since the flaw is reached by an app already running on the machine. Machines already on the fixed builds are not affected. The sources do not say whether a specific configuration or feature is required.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000613,"input_tokens":3294,"output_tokens":567,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-112536':15A,18A '-2026':14A,17A '15.8.2':58B,86C '26.7.2':61B,89C '27.2':56B,83C 'abl':94C 'address':70C 'app':9A,37B,91C 'appl':45B 'better':49B 'bound':5A,29B,50B,66C,73C 'caus':96C 'check':51B,74C 'corrupt':10A 'crash':38B 'cve':13A,16A 'endpoint':19B 'fix':46B,78C 'flaw':31B 'fleet':23B 'gate':55B,82C 'golden':54B,81C 'improv':72C 'infrastructur':20B 'issu':68C,76C 'kernel':11A,43B,102C 'let':7A,34B 'local':36B 'mac':22B 'mac-fleet':21B 'maco':1A,24B,33B,53B,80C,84C,87C 'may':92C 'memori':12A,44B,103C 'out-of-bound':2A,26B,63C 'sequoia':57B,85C 'system':40B,98C 'taho':60B,88C 'termin':99C 'unexpect':97C 'write':6A,30B,42B,67C,101C","nicknames":[],"mitigations":[],"who_affected":"Any Mac running an unpatched macOS release on one of the affected lines can be hit, since the flaw is reached by an app already running on the machine. Machines already on the fixed builds are not affected. The sources do not say whether a specific configuration or feature is required.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-26T21:17:46+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-112536","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112536","severity":null,"published_at":"2026-10-26T21:17:46+00:00","modified_at":"2026-10-26T21:17:46+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"}