CVE-2021-30809

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to arbitrary code execution.

• CWE-416

• http://www.openwall.com/lists/oss-security/2021/12/20/6Mailing List, Third Party Advisory
• https://support.apple.com/en-us/HT212814Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212815Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212816Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212819Release Notes, Vendor Advisory
• https://support.apple.com/kb/HT212869Vendor Advisory
• http://www.openwall.com/lists/oss-security/2021/12/20/6Mailing List, Third Party Advisory
• https://support.apple.com/en-us/HT212814Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212815Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212816Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212819Release Notes, Vendor Advisory
• https://support.apple.com/kb/HT212869Vendor Advisory

Published

Oct 28, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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• CVE-2021-30804A permissions issue was addressed with improved validation. …3.3
• CVE-2021-30805A memory corruption issue was addressed with improved input …9.8
• CVE-2021-30807A memory corruption issue was addressed with improved memory…7.8
• CVE-2021-30808This issue was addressed with improved checks. This issue is…5.5
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• CVE-2021-30811This issue was addressed with improved checks. This issue is…5.5
• CVE-2021-30813This issue was addressed with improved checks. This issue is…6.5
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