CVE-2021-30849

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, watchOS 8, Safari 15, tvOS 15, iOS 15 and iPadOS 15, iTunes 12.12 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.

• CWE-787

• http://seclists.org/fulldisclosure/2021/Oct/60Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2021/Oct/61Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2021/Oct/62Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2021/Oct/63Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/10/26/9Mailing List
• http://www.openwall.com/lists/oss-security/2021/10/27/1Mailing List
• http://www.openwall.com/lists/oss-security/2021/10/27/2Mailing List
• http://www.openwall.com/lists/oss-security/2021/10/27/4Mailing List
• https://support.apple.com/en-us/HT212807Vendor Advisory
• https://support.apple.com/en-us/HT212814Vendor Advisory
• https://support.apple.com/en-us/HT212815Vendor Advisory
• https://support.apple.com/en-us/HT212816Vendor Advisory
• https://support.apple.com/en-us/HT212817Vendor Advisory
• https://support.apple.com/en-us/HT212819Vendor Advisory
• https://support.apple.com/kb/HT212869Vendor Advisory
• https://support.apple.com/kb/HT212953Vendor Advisory
• http://seclists.org/fulldisclosure/2021/Oct/60Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2021/Oct/61Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2021/Oct/62Mailing List, Third Party Advisory
• http://seclists.org/fulldisclosure/2021/Oct/63Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/10/26/9Mailing List
• http://www.openwall.com/lists/oss-security/2021/10/27/1Mailing List
• http://www.openwall.com/lists/oss-security/2021/10/27/2Mailing List
• http://www.openwall.com/lists/oss-security/2021/10/27/4Mailing List
• https://support.apple.com/en-us/HT212807Vendor Advisory
• https://support.apple.com/en-us/HT212814Vendor Advisory
• https://support.apple.com/en-us/HT212815Vendor Advisory
• https://support.apple.com/en-us/HT212816Vendor Advisory
• https://support.apple.com/en-us/HT212817Vendor Advisory
• https://support.apple.com/en-us/HT212819Vendor Advisory
• https://support.apple.com/kb/HT212869Vendor Advisory
• https://support.apple.com/kb/HT212953Vendor Advisory

Published

Oct 19, 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.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-30843This issue was addressed with improved checks. This issue is…7.8
• CVE-2021-30844A logic issue was addressed with improved state management. …7.5
• CVE-2021-30845An out-of-bounds read was addressed with improved bounds che…5.5
• CVE-2021-30846A memory corruption issue was addressed with improved memory…7.8
• CVE-2021-30847This issue was addressed with improved checks. This issue is…7.8
• CVE-2021-30848A memory corruption issue was addressed with improved memory…7.8
• CVE-2021-30850An access issue was addressed with improved access restricti…5.5
• CVE-2021-30851A memory corruption vulnerability was addressed with improve…8.8
• CVE-2021-30852A type confusion issue was addressed with improved memory ha…8.8
• CVE-2021-30853This issue was addressed with improved checks. This issue is…5.5
• CVE-2021-30854A logic issue was addressed with improved state management. …8.6
• CVE-2021-30855A validation issue existed in the handling of symlinks. This…5.5