CVE-2021-30869

7.8 HIGH CISA KEV - Actively Exploited
Published: August 24, 2021 Modified: October 23, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://support.apple.com/en-us/HT212146
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT212147
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT212824
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT212825
Source: product-security@apple.com
Vendor Advisory
https://support.apple.com/en-us/HT212146
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT212147
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT212824
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://support.apple.com/en-us/HT212825
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30869
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

9 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.8 / 10.0
EPSS (Exploit Probability)
2.0%
83th percentile
Exploitation Status
Actively Exploited
Remediation due: 2021-11-17

Weaknesses (CWE)

Affected Vendors

apple