CVE-2021-30680

Name: CVE-2021-30680
Creator: NVD / NIST
Published: 2021-09-08T15:15:14.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2021-30680 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4. A local user may be able to load unsigned kernel extensions.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.30%

21.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Macos	< 11.4

References

https://support.apple.com/en-us/HT212529Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212529Release Notes, Vendor Advisory

Timeline

Published: Sep 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30680?

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4. A local user may be able to load unsigned kernel extensions.

How severe is CVE-2021-30680?

CVE-2021-30680 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30680?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30680?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST