CVE-2021-30716

Name: CVE-2021-30716
Creator: NVD / NIST
Published: 2021-09-08T15:15:16.043+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 1.57%

Last modified Jun 17, 2026

CVE-2021-30716 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave. EPSS estimates a 1.57% 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, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave. An attacker in a privileged network position may be able to perform denial of service.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

1.57%

72.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	>= 10.14, <= 10.14.5
Apple	Mac Os X	>= 10.15, <= 10.15.6
Apple	Mac Os X	10.14.6
Apple	Mac Os X	10.15.7
Apple	Macos	>= 11.0, < 11.4

References

https://support.apple.com/en-us/HT212529Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212530Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212531Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212529Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212530Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT212531Release Notes, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-30716?

How severe is CVE-2021-30716?

CVE-2021-30716 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.57% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30716?

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-2021-30716?

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

Scan your code now

Source: NVD / NIST