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Vulnerability record · CVE-2021-30557 · published 2 July 2021

CVE-2021-30557: Google chrome use after free vulnerability

Google · Chrome

Use after free in TabGroups in Google Chrome prior to 91.0.4472.114 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.

8.8 CVSS 3.1 High EPSS 12% · top 4.1% CWE-416 · Use after free
8.8CVSS 3.1 base score, v2 6.8
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

Use after free in TabGroups in Google Chrome prior to 91.0.4472.114 allowed an attacker who convinced a user to install a malicious extension 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

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

References

LinkTags
https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop_17.html Release NotesVendor Advisory
https://crbug.com/1202102 Permissions RequiredVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4T
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAO
https://security.gentoo.org/glsa/202107-06 Third Party Advisory
https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop_17.html Release NotesVendor Advisory
https://crbug.com/1202102 Permissions RequiredVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4T
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAO
https://security.gentoo.org/glsa/202107-06 Third Party Advisory

Track CVE-2021-30557 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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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-2021-30557), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.