{"id":"CVE-2026-20639","published":"2026-03-25T00:32:30Z","modified":"2026-04-02T18:20:46Z","title":"An integer overflow was addressed with improved input validation","vendor":"Apple","product":"macOS","tier":"tail","description":{"text":"An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3. Processing a maliciously crafted string may lead to heap corruption.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"CISA ADP Vulnrichment"},"epss":{"score":0.00622,"percentile":0.49663,"provenance":"source"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"references":[{"url":"https://support.apple.com/en-us/126348","tags":[]},{"url":"https://support.apple.com/en-us/126795","tags":[]},{"url":"https://support.apple.com/en-us/126796","tags":[]}],"priority":{"score":15.2,"factors":[{"name":"EPSS percentile","points":9.93},{"name":"CVSS severity","points":5.25}]},"vendorSlug":"apple","affectedVersions":[{"vendor":"Apple","product":"macOS","versions":["< 14.8.5","< 15.7.5","< 26.3"]}],"euvd":{"id":"EUVD-2026-15043","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-apple-ios-macos-cwe-190"}}