{"id":"CVE-2026-84509","aliases":["EUVD-2026-77884","GHSA-fxfm-5vqf-f3wr"],"status":"published","title":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS...","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00404,"percentile":0.35074,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2026-09-14T20:49:59Z","modified":"2026-10-26T20:39:27Z","products":[{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/149035","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/149042","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/149043","tags":["Release Notes","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84509"},{"url":"https://github.com/advisories/GHSA-fxfm-5vqf-f3wr"}],"sources":{"cve":[{"id":"CVE-2026-84509","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination.","status":"published","published":"2026-09-14T20:49:59.838Z","modified":"2026-10-26T20:39:27.428Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:20:08.391556Z"}],"euvd":[{"id":"EUVD-2026-77884","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination.","status":"published","published":"2026-09-14T20:49:59Z","modified":"2026-10-26T20:39:27Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:59:26.685361Z"}],"ghsa":[{"id":"GHSA-fxfm-5vqf-f3wr","title":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS...","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination.","status":"published","published":"2026-09-14T21:31:52Z","modified":"2026-09-17T18:33:25Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:12:07.664955Z"}],"nvd":[{"id":"CVE-2026-84509","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious SMB server may lead to unexpected system termination.","status":"published","published":"2026-09-14T21:17:27.413Z","modified":"2026-09-17T16:56:34.883Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:47.335523Z"}]}}