{"id":"CVE-2026-64727","published":"2026-07-27T20:13:58Z","modified":"2026-07-28T18:50:21Z","title":"A type confusion issue was addressed with improved memory handling","vendor":"Apple","product":"macOS","tier":"tail","description":{"text":"A type confusion issue was addressed with improved memory handling. This issue is fixed in macOS Tahoe 26.6, tvOS 26.6. An app may be able to cause unexpected system termination.","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":0.00499,"percentile":0.42595,"provenance":"source"},"cwes":[{"id":"CWE-843","name":"Access of Resource Using Incompatible Type"}],"references":[{"url":"https://support.apple.com/en-us/128067","tags":[]},{"url":"https://support.apple.com/en-us/128069","tags":[]}],"priority":{"score":15.4,"factors":[{"name":"EPSS percentile","points":8.52},{"name":"CVSS severity","points":6.86}]},"vendorSlug":"apple","affectedVersions":[{"vendor":"Apple","product":"macOS","versions":["< 26.6"]},{"vendor":"Apple","product":"tvOS","versions":["< 26.6"]}],"euvd":{"id":"EUVD-2026-49559","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-apple-ios-macos-cwe-843"}}