{"id":"CVE-2026-84520","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-84520","generatedAt":"2026-09-20T15:04:29.219Z","title":"A buffer overflow was addressed with improved size validation.","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.","published":"2026-09-14T21:17:29.000Z","lastModified":"2026-09-16T17:14:38.000Z","status":"Analyzed","sourceIdentifier":"product-security@apple.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-120"],"affected":["apple/macos"],"epss":{"score":0.00325,"percentile":0.25826,"date":"2026-09-19","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://support.apple.com/en-us/149035","tags":["Vendor Advisory","Release Notes"],"source":"product-security@apple.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-84520","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}