CVE-2021-30657

Apple macOS

Published 8 Sept 2021 · updated 17 Jun 2026 · Analyzed

5.5 Medium · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, with a remediation deadline of 17 Nov 2021 for US federal agencies.

Required action: Apply updates per vendor instructions.

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..

References

support.apple.com/en-us/HT212325 · Release Notes, Vendor Advisory
support.apple.com/en-us/HT212326 · Release Notes, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30657 · Third Party Advisory, US Government Resource