Apple Multiple Products Memory Initialization Vulnerability

Added to KEV
2021-11-03
Federal due date
2022-05-03
Vendor
Apple
Product
Multiple Products
EPSS
97.6th percentile (score 0.438, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2020-27950

CISA short description

Apple iOS, iPadOS, macOS, and watchOS contain a memory initialization vulnerability that may allow a malicious application to disclose kernel memory.

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.