{"id":"CVE-2021-30910","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-30910","generatedAt":"2026-10-27T21:20:21.280Z","title":"An out-of-bounds read was addressed with improved bounds checking.","description":"An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, tvOS 15.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted file may disclose user information.","published":"2021-08-24T19:15:19.000Z","lastModified":"2026-06-17T03:51:07.000Z","status":"Modified","sourceIdentifier":"product-security@apple.com","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},"cwe":["CWE-125"],"affected":["apple/ipados","apple/iphone os","apple/mac os x","apple/macos","apple/tvos"],"epss":{"score":0.01078,"percentile":0.64809,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.08%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://support.apple.com/en-us/HT212867","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/HT212869","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/HT212871","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/HT212872","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/HT212876","source":"product-security@apple.com"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1369/","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/HT212867","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/en-us/HT212869","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/en-us/HT212871","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/en-us/HT212872","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/en-us/HT212876","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1369/","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-30910","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."}