CVE-2021-30657

5.5 MEDIUM CISA KEV - Actively Exploited
Published: September 08, 2021 Modified: October 23, 2025

Description

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A malicious application may bypass Gatekeeper checks. Apple is aware of a report that this issue may have been actively exploited..

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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:N/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://support.apple.com/en-us/HT212325
Source: product-security@apple.com
Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212326
Source: product-security@apple.com
Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212325
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Vendor Advisory
https://support.apple.com/en-us/HT212326
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30657
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Third Party Advisory US Government Resource

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.5 / 10.0
EPSS (Exploit Probability)
74.3%
99th percentile
Exploitation Status
Actively Exploited
Remediation due: 2021-11-17

Weaknesses (CWE)

Affected Vendors

apple