CVE-2021-30952

An integer overflow was addressed with improved input validation. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.

• CWE-190
• CWE-190

• http://www.openwall.com/lists/oss-security/2022/01/21/2Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/Broken Link
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/Broken Link
• https://support.apple.com/en-us/HT212975Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212976Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212978Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212980Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212982Release Notes, Vendor Advisory
• https://www.debian.org/security/2022/dsa-5060Mailing List, Third Party Advisory
• https://www.debian.org/security/2022/dsa-5061Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2022/01/21/2Mailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/Broken Link
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/Broken Link
• https://support.apple.com/en-us/HT212975Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212976Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212978Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212980Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT212982Release Notes, Vendor Advisory
• https://www.debian.org/security/2022/dsa-5060Mailing List, Third Party Advisory
• https://www.debian.org/security/2022/dsa-5061Mailing List, Third Party Advisory
• https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kitExploit, Third Party Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30952US Government Resource

Published

Aug 24, 2021

Last Modified

Jun 17, 2026

Status

Analyzed

• 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-2021-30947An access issue was addressed with additional sandbox restri…5.5
• CVE-2021-30948An inconsistent user interface issue was addressed with impr…4.6
• CVE-2021-30949A memory corruption issue was addressed with improved state …7.8
• CVE-2021-3095Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2021-30950A logic issue was addressed with improved state management. …5.5
• CVE-2021-30951A use after free issue was addressed with improved memory ma…8.8
• CVE-2021-30953An out-of-bounds read was addressed with improved bounds che…8.8
• CVE-2021-30954A type confusion issue was addressed with improved memory ha…7.8
• CVE-2021-30955A race condition was addressed with improved state handling.…7
• CVE-2021-30956A lock screen issue allowed access to contacts on a locked d…2.4
• CVE-2021-30957A buffer overflow issue was addressed with improved memory h…7.8
• CVE-2021-30958An out-of-bounds read was addressed with improved input vali…7.8