CVE-2021-30952 — Apple Multiple Products Integer Overflow or Wraparound Vulnerability
CVE-2021-30952: Apple Multiple Products Integer Overflow or Wraparound Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Apple |
| Product | Multiple Products |
| Date added | 2026-03-05 |
| Due date | 2026-03-26 |
| Ransomware campaign use | Unknown |
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
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
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-30952
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog