CVE-2021-21220
HighActively exploited (CISA KEV)
Description
Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Google Chromium V8
PublishedApr 26, 2021
First seenApr 26, 2021
Added to KEVNov 3, 2021
Weakness typeCWE-787Out-of-bounds write
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Nov 17, 2021Update
- google chrome89.0.4389.128 or later
Vendor advisories
- security.gentoo.org/glsa/202104-08
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| google chrome | v < 89.0.4389.128 | 89.0.4389.128 |
| fedoraproject fedora | 32, 33, 34 | — |
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