CVE-2021-30846

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, Safari 15, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/
• 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/HT212819Vendor Advisory
• https://support.apple.com/kb/HT212869Vendor Advisory
• https://www.debian.org/security/2021/dsa-4995Third Party Advisory
• https://www.debian.org/security/2021/dsa-4996Third Party 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/
• 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/HT212819Vendor Advisory
• https://support.apple.com/kb/HT212869Vendor Advisory
• https://www.debian.org/security/2021/dsa-4995Third Party Advisory
• https://www.debian.org/security/2021/dsa-4996Third Party 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.

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