CVE-2021-30655: Critical severity apple macos vulnerability

Published Apr 26, 2021
·
Updated

An application may be able to execute arbitrary code with system privileges. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. The issue was addressed with improved permissions logic.

Other sources

Wi-Fi. An application may be able to execute arbitrary code with system privileges.

Wi-Fi. The issue was addressed with improved permissions logic.

Credit

Gary Nield(ECSC Group plc), Tim Michaud@@TimGMichaud(Zoom Video Communications), Wojciech Reguła@@_r3ggi(SecuRing)

Affected Software

13 affected componentsFixes available
Apple macOS Big Sur<11.3
11.3
Apple Catalina
Apple iOS and macOS>=10.15<=10.15.5
Apple iOS and macOS=10.15.6
Apple iOS and macOS=10.15.6-supplemental_update
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS=10.15.7-supplemental_update
Apple macOS>=11.0<11.3

Event History

Sep 8, 2021
CVE Published
via MITRE·02:47 PM
Data Sourced
via MITRE·02:47 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is CVE-2021-30655?

CVE-2021-30655 is a vulnerability in Wi-Fi where an application may be able to execute arbitrary code with system privileges.

2

Which software is affected by CVE-2021-30655?

CVE-2021-30655 affects Apple Catalina and Apple macOS Big Sur up to version 11.3.

3

How can I fix CVE-2021-30655?

To fix CVE-2021-30655, update your Apple macOS Big Sur to version 11.3 or later.

4

Where can I find more information about CVE-2021-30655?

You can find more information about CVE-2021-30655 on the Apple support website.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203