{"id":"CVE-2026-84520","aliases":["EUVD-2026-77997","GHSA-ggcw-m5qm-2p57"],"status":"published","title":"A buffer overflow was addressed with improved size validation. This issue is fixed in macOS...","description":"A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00445,"percentile":0.39099,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-120"],"published":"2026-09-14T20:48:15Z","modified":"2026-10-26T20:35:45Z","exploits":[{"source":"pocgithub","id":"csrXamfi/CVE-2026-84520","title":"csrXamfi/CVE-2026-84520","date":"2026-10-10","url":"https://github.com/csrXamfi/CVE-2026-84520"}],"products":[{"vendor":"apple","product":"macos"}],"references":[{"url":"https://support.apple.com/en-us/149035","tags":["Vendor Advisory","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84520"},{"url":"https://github.com/advisories/GHSA-ggcw-m5qm-2p57"}],"sources":{"cve":[{"id":"CVE-2026-84520","description":"A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.","status":"published","published":"2026-09-14T20:48:15.606Z","modified":"2026-10-26T20:35:45.645Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:20:08.009733Z"}],"euvd":[{"id":"EUVD-2026-77997","description":"A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.","status":"published","published":"2026-09-14T20:48:15Z","modified":"2026-10-26T20:35:45Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:59:27.575146Z"}],"ghsa":[{"id":"GHSA-ggcw-m5qm-2p57","title":"A buffer overflow was addressed with improved size validation. This issue is fixed in macOS...","description":"A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.","status":"published","published":"2026-09-14T21:31:52Z","modified":"2026-09-16T15:31:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T15:12:00.173219Z"}],"nvd":[{"id":"CVE-2026-84520","description":"A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.","status":"published","published":"2026-09-14T21:17:28.55Z","modified":"2026-09-16T17:14:37.69Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:12:47.335523Z"}]}}