# CVE-2021-30657: Apple macOS Unspecified Vulnerability

> CVE-2021-30657: Apple macOS Unspecified Vulnerability. CVSS 5.5 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2021-30657
Last updated: 2025-10-21T23:25:34Z

- Published: 2021-09-08 14:49 UTC · Updated: 2025-10-21 23:25 UTC · Assigner: apple
- CVSS: 5.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- EPSS: 68.5%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2021-11-17, ransomware use: Unknown

## 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..

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Apple: macOS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-30657)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-30657)
- [https://support.apple.com/en-us/HT212325](https://support.apple.com/en-us/HT212325)
- [https://support.apple.com/en-us/HT212326](https://support.apple.com/en-us/HT212326)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2021-30657 · Markdown: https://rewindex.com/cve/CVE-2021-30657.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-30657 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:15.825Z