CVE-2021-30657Apple macOS Unspecified Vulnerability

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..

5.5 MEDIUMEPSS 68.53%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 03:50 UTC

OverviewCVSS details

5.5MEDIUMCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Sep 8, 2021
Assigner: apple

Affected

macOS (Apple)

Versions: before 11.3
Fixed in: 11.3

+1 more product →

Exploitation

Public exploit: None listed
CISA KEV: Listed · Nov 3, 2021
KEV due date: Nov 17, 2021
Ransomware use: Unknown
SSVC: Exploitation active · Automatable no · Impact partial

EPSS · FIRST, scored Nov 7

68.53%chance of exploitation in 30 days

Higher than 99.34% of CVEs

CVSS 3.1 · NVD

5.5Medium

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack vector: Local
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality impact: None
Integrity impact: High
Availability impact: None

CVSS 2.0 · NVD

4.3Medium

AV:N/AC:M/Au:N/C:N/I:P/A:N

Attack vector: Network
Attack complexity: Medium
Authentication: None
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
5.5	MEDIUM	3.1NVD	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
4.3	MEDIUM	2.0NVD	AV:N/AC:M/Au:N/C:N/I:P/A:N

CISA required action

⚡ Known exploited · remediation due Nov 17, 2021

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Details

CVE ID: CVE-2021-30657
Status: Analyzed
Assigner (CNA): apple
Published: Sep 8, 2021
Last modified: 2026-06-17 03:50 UTC
Weaknesses: CWE-862

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 10:32 UTC.