CVE-2021-30952 — Apple Multiple Products: Apple Multiple Products Integer Overflow or Wraparound Vulnerability
CVE-2021-30952 — 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.
What This Means For You
- CISA has confirmed active exploitation — immediate patching required.
- Added to CISA KEV catalog — federal agencies must remediate by 2026-03-26.
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2021-30952 | Integer Overflow | Apple tvOS, macOS, Safari, iPadOS and watchOS: Processing of maliciously crafted web content leading to arbitrary code execution. |
| CVE-2021-30952 | RCE | Apple tvOS, macOS, Safari, iPadOS and watchOS: Integer overflow or wraparound vulnerability due to processing of maliciously crafted web content. |
Source & Attribution
| Source Platform | CISA |
| Channel | CISA KEV |
| Published | March 05, 2026 at 14:00 UTC |
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