CISA Known Exploited Vulnerability
This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.
Remediation Deadline: Mar 26, 2026
High
CISA KEVCVE-2021-30952
Apple—Multiple Products
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
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://nvd.nist.gov/vuln/detail/CVE-2021-30952
Vulnerability Overview
- Severity
- High
- CISA KEV
- Yes
- Ransomware
- Unknown
- Published
- Mar 5, 2026
- KEV Added
- Mar 5, 2026
- Due Date
- Mar 26, 2026
- Related Articles
- 0
Vendor
Apple
Multiple Products