What is CVE-2021-30657?

CVE-2021-30657 is a vulnerability in Apple Macos. Published 2021-09-08.

Is CVE-2021-30657 known to be exploited?

Yes. CVE-2021-30657 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 12 public proof-of-concept repositories are indexed.

Vulnerability in Apple Macos

CVE-2021-30657

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…

EPSS: 0.831 (99.3th percentile) — read the EPSS interpretation.

Affected products

Apple Macos — versions unspecified

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2021-11-17.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

support.apple.com/en-us/HT212325 (x_refsource_MISC)
support.apple.com/en-us/HT212326 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-30657?: CVE-2021-30657 is a vulnerability in Apple Macos. Published 2021-09-08.
Is CVE-2021-30657 known to be exploited?: Yes. CVE-2021-30657 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 12 public proof-of-concept repositories are indexed.