{"id":"CVE-2021-30826","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-30826","generatedAt":"2026-10-28T02:58:54.117Z","title":"A logic issue was addressed with improved state management.","description":"A logic issue was addressed with improved state management. This issue is fixed in iOS 15 and iPadOS 15. In certain situations, the baseband would fail to enable integrity and ciphering protection.","published":"2021-10-19T14:15:09.000Z","lastModified":"2026-06-17T03:50:58.000Z","status":"Modified","sourceIdentifier":"product-security@apple.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":[],"affected":["apple/ipados","apple/iphone os"],"epss":{"score":0.01255,"percentile":0.69296,"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":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://seclists.org/fulldisclosure/2021/Oct/61","tags":["Mailing List","Third Party Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/HT212814","tags":["Release Notes","Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/kb/HT212807","tags":["Release Notes","Vendor Advisory"],"source":"product-security@apple.com"},{"url":"http://seclists.org/fulldisclosure/2021/Oct/61","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/en-us/HT212814","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/kb/HT212807","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-30826","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."}