CVE-2021-30952
Apple Inc. · published 2021-08-24
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2026-03-05).
- CISA's name for it: Apple Multiple Products Integer Overflow or Wraparound Vulnerability
- CISA's description: Apple tvOS, macOS, Safari, iPadOS and watchOS contain an integer overflow or wraparound vulnerability due to the processing of maliciously crafted web content that may lead to arbitrary code execution.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by Apple Inc. via the CVE Program.
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.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Apple | watchOS | unspecified – before 8.3: affected |
| Apple | iOS and iPadOS | unspecified – before 15.2: affected |
| Apple | macOS | unspecified – before 12.1: affected |
| Apple | macOS | unspecified – before 15.2: affected |
| Apple | macOS | unspecified – before 15.2: affected |
Products named in NVD's CPE match criteria (10)
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 7.8 HIGH — as published by NIST (Primary)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 3.1: 8.8 HIGH — as published by CISA-ADP (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0: 6.8 MEDIUM — as published by NIST (Primary)
AV:N/AC:M/Au:N/C:P/I:P/A:P - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: no · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- http://www.openwall.com/lists/oss-security/2022/01/21/2
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/
- https://support.apple.com/en-us/HT212975
- https://support.apple.com/en-us/HT212976
- https://support.apple.com/en-us/HT212978
- https://support.apple.com/en-us/HT212980
- https://support.apple.com/en-us/HT212982
- https://www.debian.org/security/2022/dsa-5060
- https://www.debian.org/security/2022/dsa-5061
- http://www.openwall.com/lists/oss-security/2022/01/21/2
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/
- https://support.apple.com/en-us/HT212975
- https://support.apple.com/en-us/HT212976
- https://support.apple.com/en-us/HT212978
- https://support.apple.com/en-us/HT212980
- https://support.apple.com/en-us/HT212982
- https://www.debian.org/security/2022/dsa-5060
- https://www.debian.org/security/2022/dsa-5061
- https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30952
Source dates: published 2021-08-24, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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