Apple iOS, iPadOS, and macOS Type Confusion Vulnerability

Added to KEV
2021-11-03
Federal due date
2021-11-17
Vendor
Apple
Product
iOS, iPadOS, and macOS
EPSS
82.8th percentile (score 0.017, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2021-30869

CISA short description

Apple iOS, iPadOS, and macOS contain a type confusion vulnerability in the XNU which may allow a malicious application to execute code with kernel privileges.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.