CVE-2021-21806

HIGH 8.8CVE-2021-21806 · Published 08/07/2021 · updated 17/06/2026

In short

CVE-2021-21806 is a HIGH (CVSS 8.8) vulnerability affecting webkitgtk (webkitgtk).
Chance of exploitation in the next 30 days (EPSS): 2.8%, higher than 86.6% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
webkitgtk webkitgtk	`= 2.30.3`	No fix yet

Description

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.

References

openwall.com/lists/oss-security/2021/07/23/1 · Mailing List
talosintelligence.com/vulnerability_reports/TALOS-2020-1214 · Exploit

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Package

Affected versions

Patched versions

webkitgtk

= 2.30.3

No fix yet

More vulnerabilities in webkitgtk

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