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CVE-2021-30657

Apple macOS Unspecified

5.5 MEDIUMActively exploited (CISA KEV)EPSS 68.5%
  1. Published8 Sept 2021
  2. Added to CISA KEV3 Nov 2021
  3. Remediation due17 Nov 2021
Actively exploited (CISA KEV)

Apple macOS contains an unspecified logic issue in System Preferences that may allow a malicious application to bypass Gatekeeper checks.

Added to KEV: 3 Nov 2021Federal remediation due: 17 Nov 2021

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..

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products

Apple macOS≥ 11.0 < 11.3
Apple Mac OS X≥ 10.15 ≤ 10.15.5 · 10.15.6 · 10.15.7

Remediation

Fixed in
Apple macOS≥ 11.3

References

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Frequently asked

Is CVE-2021-30657 being actively exploited?

Yes. CVE-2021-30657 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Nov 2021.

How severe is CVE-2021-30657?

CVE-2021-30657 has a CVSS 3.1 base score of 5.5, rated medium. EPSS estimates a 68.5% probability of exploitation.

Which products are affected by CVE-2021-30657?

Affected products include Apple macOS, Apple Mac OS X.

How do I fix CVE-2021-30657?

Upgrade affected software to a fixed version, for example Apple macOS 11.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-30657 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.