CVE-2021-30909: Critical severity apple macos vulnerability

Published Aug 24, 2021
·
Updated

Kernel. A memory corruption issue was addressed with improved memory handling.

Other sources

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges.

Credit

Zweig(Kunlun Lab), Zweig(Kunlun Lab), Zweig(Kunlun Lab), Zweig(Kunlun Lab), Zweig(Kunlun Lab), Zweig(Kunlun Lab), Zweig(Kunlun Lab)

Affected Software

27 affected componentsFixes available
Apple macOS Big Sur<11.6.1
11.6.1
Apple tvOS<15.1
15.1
Apple Catalina
Apple WatchOS<8.1
8.1
Apple macOS Monterey<12.0.1
12.0.1
Apple iOS<15.1
15.1
Apple iPadOS<15.1
15.1
Apple iOS<14.8.1
14.8.1
Apple iPadOS<14.8.1
14.8.1
Apple Ipad Os<14.8.1
Apple iPadOS=15.0
Apple iPhone OS<14.8.1
Apple iPhone OS=15.0
Apple iOS and macOS<10.15.7
Apple iOS and macOS=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS=10.15.7-security_update_2021-002
Apple iOS and macOS=10.15.7-security_update_2021-003
Apple iOS and macOS=10.15.7-security_update_2021-004
Apple iOS and macOS=10.15.7-security_update_2021-005
Apple iOS and macOS=10.15.7-security_update_2021-006
Apple iOS and macOS=10.15.7-supplemental_update
Apple macOS>=11.0<11.6.1
Apple macOS=12.0
Apple tvOS<15.1
Apple WatchOS<8.1

Event History

Aug 24, 2021
CVE Published
via MITRE·06:50 PM
Data Sourced
via MITRE·06:50 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-2021-30909?

CVE-2021-30909 is a kernel vulnerability that involves a memory corruption issue which has been addressed with improved memory handling.

2

Who is affected by CVE-2021-30909?

Users of Apple products such as macOS Catalina, macOS Big Sur, iOS, iPadOS, macOS Monterey, iOS, iPadOS, tvOS, and watchOS are affected by CVE-2021-30909.

3

How can I fix CVE-2021-30909?

To fix CVE-2021-30909, users should update their Apple devices to the recommended software versions provided by Apple, such as macOS 11.6.1, macOS Big Sur 11.6.1, iOS 15.1, iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1, iPadOS 14.8.1, tvOS 15.1, and watchOS 8.1.

4

Where can I find more information about CVE-2021-30909?

You can find more information about CVE-2021-30909 on the Apple support page: [link1]

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