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Vulnerability record · CVE-2021-21225 · published 26 April 2021

CVE-2021-21225: Google chrome out-of-bounds write vulnerability

Google · Chrome

Out of bounds memory access in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

8.8 CVSS 3.1 High EPSS 6.6% · top 6.4% CWE-787 · Out-of-bounds write
8.8CVSS 3.1 base score, v2 6.8
6.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

Out of bounds memory access in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html Release NotesThird Party Advisory
https://crbug.com/1195977 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTU
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYY
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HA
https://security.gentoo.org/glsa/202104-08 Third Party Advisory
https://www.debian.org/security/2021/dsa-4906 Third Party Advisory
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html Release NotesThird Party Advisory
https://crbug.com/1195977 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTU
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYY
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HA
https://security.gentoo.org/glsa/202104-08 Third Party Advisory
https://www.debian.org/security/2021/dsa-4906 Third Party Advisory

Track CVE-2021-21225 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-21225), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.