{"id":"CVE-2026-86889","aliases":["EUVD-2026-77911","GHSA-6fvx-gp4r-8x93"],"status":"published","title":"A certificate validation issue was addressed with improved certificate validation. This issue is...","description":"A certificate validation issue was addressed with improved certificate validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in a privileged network position may be able to intercept network traffic.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00197,"percentile":0.09486,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295"],"published":"2026-09-14T20:50:30Z","modified":"2026-10-26T20:40:53Z","products":[{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/149035","tags":["Vendor Advisory"]},{"url":"https://support.apple.com/en-us/149042","tags":["Vendor Advisory"]},{"url":"https://support.apple.com/en-us/149043","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86889"},{"url":"https://github.com/advisories/GHSA-6fvx-gp4r-8x93"}],"sources":{"cve":[{"id":"CVE-2026-86889","description":"A certificate validation issue was addressed with improved certificate validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in a privileged network position may be able to intercept network traffic.","status":"published","published":"2026-09-14T20:50:30.682Z","modified":"2026-10-26T20:40:53.822Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T13:49:42.666099Z"}],"euvd":[{"id":"EUVD-2026-77911","description":"A certificate validation issue was addressed with improved certificate validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in a privileged network position may be able to intercept network traffic.","status":"published","published":"2026-09-14T20:50:30Z","modified":"2026-10-26T20:40:53Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:59:26.356196Z"}],"ghsa":[{"id":"GHSA-6fvx-gp4r-8x93","title":"A certificate validation issue was addressed with improved certificate validation. This issue is...","description":"A certificate validation issue was addressed with improved certificate validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in a privileged network position may be able to intercept network traffic.","status":"published","published":"2026-09-14T21:31:56Z","modified":"2026-09-15T18:33:26Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:11:55.405915Z"}],"nvd":[{"id":"CVE-2026-86889","description":"A certificate validation issue was addressed with improved certificate validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An attacker in a privileged network position may be able to intercept network traffic.","status":"published","published":"2026-09-14T21:17:39.86Z","modified":"2026-09-16T01:03:23.29Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:12:47.335523Z"}]}}