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Description

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.

PUBLISHED Reserved 2021-04-13 | Published 2021-08-24 | Updated 2026-03-05 | Assigner apple

CISA Known Exploited Vulnerability

Date added 2026-03-05 | Due date 2026-03-26

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Problem types

Processing maliciously crafted web content may lead to arbitrary code execution

Product status

Any version before 8.3
affected

Any version before 15.2
affected

Any version before 12.1
affected

Any version before 15.2
affected

Any version before 15.2
affected

References

support.apple.com/en-us/HT212975

support.apple.com/en-us/HT212976

support.apple.com/en-us/HT212978

support.apple.com/en-us/HT212980

support.apple.com/en-us/HT212982

www.openwall.com/lists/oss-security/2022/01/21/2 ([oss-security] 20220121 WebKitGTK and WPE WebKit Security Advisory WSA-2022-0001) mailing-list

lists.fedoraproject.org/...7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/ (FEDORA-2022-25a98f5d55) vendor-advisory

www.debian.org/security/2022/dsa-5061 (DSA-5061) vendor-advisory

www.debian.org/security/2022/dsa-5060 (DSA-5060) vendor-advisory

lists.fedoraproject.org/...HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/ (FEDORA-2022-f7366e60cb) vendor-advisory

cloud.google.com/...lligence/coruna-powerful-ios-exploit-kit third-party-advisory

www.cisa.gov/...erabilities-catalog?field_cve=CVE-2021-30952 government-resource

support.apple.com/en-us/HT212975

support.apple.com/en-us/HT212976

support.apple.com/en-us/HT212978

support.apple.com/en-us/HT212980

support.apple.com/en-us/HT212982

www.openwall.com/lists/oss-security/2022/01/21/2 ([oss-security] 20220121 WebKitGTK and WPE WebKit Security Advisory WSA-2022-0001) mailing-list

lists.fedoraproject.org/...7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/ (FEDORA-2022-25a98f5d55) vendor-advisory

www.debian.org/security/2022/dsa-5061 (DSA-5061) vendor-advisory

www.debian.org/security/2022/dsa-5060 (DSA-5060) vendor-advisory

lists.fedoraproject.org/...HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/ (FEDORA-2022-f7366e60cb) vendor-advisory

cve.org (CVE-2021-30952)

nvd.nist.gov (CVE-2021-30952)

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