Oct 19, 2026 · 16:51 UTC SEARCH
UNRATED KNOWN EXPLOITED
Vulnerability intelligence

CVE-2021-30952

VendorApple
ProductMultiple Products
Known exploitedYes
Added to CISA KEVMarch 5, 2026
KEV due dateMarch 26, 2026
Known ransomware useNot identified by CISA

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.

Required action

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

CISA KEV status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities Catalog. Known ransomware campaign use: Unknown.

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