{"id":"CVE-2026-28858","published":"2026-03-25T00:32:28Z","modified":"2026-04-02T18:20:23Z","title":"A buffer overflow was addressed with improved bounds checking","vendor":"Apple","product":"iOS and iPadOS","tier":"tail","description":{"text":"A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.4 and iPadOS 26.4. A remote user 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":0.00555,"percentile":0.46181,"provenance":"source"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"references":[{"url":"https://support.apple.com/en-us/126792","tags":[]}],"priority":{"score":16.1,"factors":[{"name":"EPSS percentile","points":9.24},{"name":"CVSS severity","points":6.86}]},"vendorSlug":"apple","affectedVersions":[{"vendor":"Apple","product":"iOS and iPadOS","versions":["< 26.4"]}],"euvd":{"id":"EUVD-2026-15131","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-apple-ios-macos-cwe-120"}}