CVE-2021-21207

HIGH 8.6CVE-2021-21207 · Published 26/04/2021 · updated 17/06/2026

In short

CVE-2021-21207 is a HIGH (CVSS 8.6) vulnerability affecting chrome (google).
Chance of exploitation in the next 30 days (EPSS): 0.94%, higher than 61.3% of all vulnerabilities.
Fix: update to 90.0.4430.72 or later.

Package	Affected versions	Patched versions
chrome google	`< 90.0.4430.72`	`90.0.4430.72`

Description

Use after free in IndexedDB in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

References

chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html · Release Notes
crbug.com/1185732 · Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A
security.gentoo.org/glsa/202104-08 · Third Party Advisory
debian.org/security/2021/dsa-4906 · Third Party Advisory

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