CVE-2021-30869

HIGH KEV

iOS <12.5.5, iPadOS <14.4, macOS Big Sur <11.2 - Code Injection

Title source: llm

Description

A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.

References (5)

[Vendor Advisory] https://support.apple.com/en-us/HT212146

[Vendor Advisory] https://support.apple.com/en-us/HT212147

[Vendor Advisory] https://support.apple.com/en-us/HT212824

[Vendor Advisory] https://support.apple.com/en-us/HT212825

[US Government Resource] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30869

Scores

CVSS v3 7.8

EPSS 0.0172

EPSS Percentile 82.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CISA KEV 2021-11-03

VulnCheck KEV 2021-09-23

InTheWild.io 2021-09-23

ENISA EUVD EUVD-2021-17786

CWE

CWE-843

Status published

Products (6)

apple/ipados < 14.4

apple/iphone_os 12.0 - 12.5.5

apple/macos 11.0 - 11.2

apple/mac_os_x 10.14.6 security_update_2019-001 (13 CPE variants)

apple/mac_os_x 10.15.7 (10 CPE variants)

apple/mac_os_x 10.14 - 10.14.6

Published Aug 24, 2021

KEV Added Nov 03, 2021

Tracked Since Feb 18, 2026