CVE-2021-30869

HIGH KEV

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

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-30869 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021.

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)

Core 5
Core References
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212147
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212146
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212824
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212825

Scores

CVSS v3 7.8
EPSS 0.0172
EPSS Percentile 82.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

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/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
apple/macos 11.0 - 11.2
Published Aug 24, 2021
KEV Added Nov 03, 2021
Tracked Since Feb 18, 2026