CVE-2021-30851: High severity tvos vulnerability

Published Aug 24, 2021
·
Updated

A flaw was found in WebKitGTK. Processing maliciously crafted web content may lead to code execution.

References: https://webkitgtk.org/security/WSA-2021-0006.html https://www.openwall.com/lists/oss-security/2021/10/26/9

Other sources

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.

WebKit. A memory corruption vulnerability was addressed with improved locking.

Credit

Samuel Groß(Google Project Zero), Samuel Groß(Google Project Zero), Samuel Groß(Google Project Zero), Samuel Groß(Google Project Zero), Samuel Groß(Google Project Zero)

Affected Software

20 affected componentsFixes available
debian/webkit2gtk
2.36.4-1~deb10u12.38.6-0+deb10u12.40.5-1~deb11u12.42.1-1~deb11u22.40.5-1~deb12u12.42.1-1~deb12u12.42.1-2
debian/wpewebkit
2.38.6-1~deb11u12.38.6-12.42.1-1
Apple tvOS<15
15
Apple WatchOS<8
8
Apple macOS Monterey<12.0.1
12.0.1
Apple Safari<15
15
Apple iOS<15
15
Apple iPadOS<15
15
Apple Safari<15.0
Apple iPadOS<15.0
Apple iPhone OS<15.0
Apple macOS<12.0.1
Apple macOS=12.0.1
Apple tvOS<15.0
Apple WatchOS<8.0
Debian Debian Linux=10.0
Debian Debian Linux=11.0
Fedoraproject Fedora=33
Fedoraproject Fedora=34
redhat/webkitgtk<2.34.0
2.34.0

Event History

Aug 24, 2021
CVE Published
via MITRE·06:49 PM
Data Sourced
via MITRE·06:49 PM
DescriptionWeakness
Oct 29, 2021
Data Sourced
via Red Hat·05:39 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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-2021-30851?

CVE-2021-30851 is a memory corruption vulnerability in WebKit that has been addressed with improved locking.

2

Which software versions are affected by CVE-2021-30851?

CVE-2021-30851 affects watchOS up to version 8, iOS up to version 15, iPadOS up to version 15, tvOS up to version 15, Safari up to version 15, and macOS Monterey up to version 12.0.1.

3

How can I fix CVE-2021-30851?

To fix CVE-2021-30851, update your operating system and Safari to the latest available version.

4

Where can I find more information about CVE-2021-30851?

You can find more information about CVE-2021-30851 on Apple's support website at the following links: [HT212814](https://support.apple.com/en-us/HT212814), [HT212819](https://support.apple.com/en-us/HT212819), and [HT212815](https://support.apple.com/en-us/HT212815).

Company

Resources

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
CVE-2021-30851 - High severity tvos vulnerability - SecAlerts