CVE-2021-30734

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOS Big Sur 11.4, watchOS 7.5. Processing maliciously crafted web content may lead to arbitrary code execution.

• CWE-787

• https://support.apple.com/en-us/HT212528Vendor Advisory
• https://support.apple.com/en-us/HT212529Vendor Advisory
• https://support.apple.com/en-us/HT212532Vendor Advisory
• https://support.apple.com/en-us/HT212533Vendor Advisory
• https://support.apple.com/en-us/HT212534Vendor Advisory
• https://support.apple.com/en-us/HT212528Vendor Advisory
• https://support.apple.com/en-us/HT212529Vendor Advisory
• https://support.apple.com/en-us/HT212532Vendor Advisory
• https://support.apple.com/en-us/HT212533Vendor Advisory
• https://support.apple.com/en-us/HT212534Vendor Advisory

Published

Sep 8, 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-2021-30726A malicious application may be able to execute arbitrary cod…7.8
• CVE-2021-30727A logic issue was addressed with improved state management. …5.5
• CVE-2021-30728An out-of-bounds write issue was addressed with improved bou…7.8
• CVE-2021-30729A logic issue was addressed with improved restrictions. This…7.5
• CVE-2021-30731This issue was addressed with improved checks. This issue is…5.5
• CVE-2021-30733An out-of-bounds read was addressed with improved input vali…5.5
• CVE-2021-30735A malicious application may be able to execute arbitrary cod…7.8
• CVE-2021-30736A buffer overflow was addressed with improved size validatio…7.8
• CVE-2021-30737A memory corruption issue in the ASN.1 decoder was addressed…8.8
• CVE-2021-30738A malicious application may be able to overwrite arbitrary f…5.5
• CVE-2021-30739A local attacker may be able to elevate their privileges. Th…7.8
• CVE-2021-30740A logic issue was addressed with improved validation. This i…7.8