CVE-2021-4063

HIGH 8.8CVE-2021-4063 · Published 23/12/2021 · updated 17/06/2026

In short

CVE-2021-4063 is a HIGH (CVSS 8.8) vulnerability affecting chrome (google).
Chance of exploitation in the next 30 days (EPSS): 1.4%, higher than 71.9% of all vulnerabilities.
Fix: update to 96.0.4664.93 or later.

Package	Affected versions	Patched versions
chrome google	`< 96.0.4664.93`	`96.0.4664.93`

Description

Use after free in developer tools in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

References

chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop.html · Vendor Advisory
crbug.com/1273176 · Permissions Required
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744
security.gentoo.org/glsa/202208-25 · Third Party Advisory
debian.org/security/2022/dsa-5046 · Third Party Advisory

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Package

Affected versions

Patched versions

chrome

google

< 96.0.4664.93

96.0.4664.93

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