{"id":"CVE-2026-64767","published":"2026-07-27T20:13:51Z","modified":"2026-10-26T20:40:00Z","title":"A buffer overflow was addressed with improved bounds checking","vendor":"Apple","product":"macOS","tier":"tail","description":{"text":"A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sequoia 15.8.2, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.","provenance":"source","from":"CVE.org"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"CISA ADP Vulnrichment"},"epss":{"score":0.00895,"percentile":0.59389,"provenance":"source"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"references":[{"url":"https://support.apple.com/en-us/128067","tags":[]},{"url":"https://support.apple.com/en-us/128071","tags":[]},{"url":"https://support.apple.com/en-us/128072","tags":[]},{"url":"https://support.apple.com/en-us/149523","tags":[]}],"priority":{"score":18.7,"factors":[{"name":"EPSS percentile","points":11.88},{"name":"CVSS severity","points":6.86}]},"vendorSlug":"apple","affectedVersions":[{"vendor":"Apple","product":"macOS","versions":["< 14.8.8","< 15.7.8","< 15.8.2","< 26.6"]}],"euvd":{"id":"EUVD-2026-49551","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-apple-ios-macos-cwe-120"}}