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CVE-2021-30807

Severity
HIGH
CVSS
7.8
EPSS
0.28839
Risk score
66.29
CISA KEV
Yes
PoC
No
Published
2021-10-19
Modified
2025-10-21
First seen
2026-08-07
Aliases
EUVD-2021-17724, GHSA-676H-WCX2-4W5Q
Products
Apple:Multiple Products, Apple:macOS unspecified <11.5, Apple:macOS unspecified <14.7, Apple:macOS unspecified <7.6
Sources
cisa.gov CVE-2021-30807
euvd EUVD-2021-17724

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.5.1, iOS 14.7.1 and iPadOS 14.7.1, watchOS 7.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

References