CVE-2021-21806: Use After Free
First published: Thu Jul 08 2021(Updated: )
An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WebKitGTK WebKitGTK | =2.30.3 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is CVE-2021-21806?
CVE-2021-21806 is an exploitable use-after-free vulnerability in WebKitGTK browser version 2.30.3 x64, which can lead to remote code execution.
How does CVE-2021-21806 work?
CVE-2021-21806 occurs when a specially crafted HTML web page causes a use-after-free condition, allowing an attacker to execute remote code.
Which software version is affected by CVE-2021-21806?
WebKitGTK browser version 2.30.3 x64 is affected by CVE-2021-21806.
What is the severity of CVE-2021-21806?
CVE-2021-21806 has a severity rating of 8.8 (high).
How can I protect myself from CVE-2021-21806?
To protect yourself from CVE-2021-21806, update your WebKitGTK browser to a version that includes a fix for the vulnerability.
- collector/nvd-index
- agent/tags
- agent/event
- agent/references
- agent/weakness
- agent/severity
- agent/author
- agent/type
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- vendor/webkitgtk
- canonical/webkitgtk webkitgtk
- version/webkitgtk webkitgtk/2.30.3