← Vulnerability feed

Vulnerability record · CVE-2021-21120 · published 9 February 2021

CVE-2021-21120: Google chrome use after free vulnerability

Google · Chrome

Use after free in WebSQL in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

8.8 CVSS 3.1 High EPSS 6.9% · top 6.2% CWE-416 · Use after free
8.8CVSS 3.1 base score, v2 6.8
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Use after free in WebSQL in Google Chrome prior to 88.0.4324.96 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

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

References

LinkTags
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html Release NotesVendor Advisory
https://crbug.com/1160602 Permissions RequiredThird Party Advisory
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21120 PatchVendor Advisory
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html Release NotesVendor Advisory
https://crbug.com/1160602 Permissions RequiredThird Party Advisory
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21120 PatchVendor Advisory

Track CVE-2021-21120 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.

Start free Open in platform

Related vulnerabilities

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

9.8CVE-2025-10585Google Chrome V8 type confusion enables heap corruptionChrome's V8 JavaScript engine contains a type confusion flaw (CWE-843) that can lead to heap corruption when processing a crafted HTML page. It affec…KEVEPSS 5.4%analysed9.8CVE-2014-0497Adobe Flash Player integer underflow allows remote code executionAdobe Flash Player contains an integer underflow (CWE-191) that allows remote attackers to execute arbitrary code via unspecified vectors. The flaw a…KEVEPSS 100%analysed9.6CVE-2024-7971Google Chrome V8 type confusion enables heap corruptionChrome's V8 JavaScript engine contains a type confusion flaw (CWE-843) that lets a crafted HTML page corrupt the heap. It affects Chrome before 128.0…KEVEPSS 21%analysed9.6CVE-2024-5274Google Chrome V8 type confusion allows sandbox code executionGoogle Chrome before 125.0.6422.112 contains a type confusion flaw in the V8 JavaScript engine. A crafted HTML page can trigger the confusion and lea…KEVEPSS 7.5%analysed9.6CVE-2024-4947Google Chrome V8 type confusion allows sandboxed remote code executionGoogle Chrome before 125.0.6422.60 contains a type confusion flaw in the V8 JavaScript engine. A crafted HTML page can trigger the confusion and let …KEVEPSS 15%analysed9.6CVE-2024-4671Google Chrome Visuals use-after-free enables sandbox escapeCVE-2024-4671 is a use-after-free flaw in the Visuals component of Google Chrome prior to 124.0.6367.201. An attacker who has already compromised the…KEVEPSS 8.3%analysed9.6CVE-2023-6345Chrome Skia integer overflow enables sandbox escapeAn integer overflow in Skia in Google Chrome before 119.0.6045.199 lets a remote attacker who already controls the renderer process escape the browse…KEVEPSS 16%analysed9.6CVE-2023-2136Google Chrome Skia integer overflow enables sandbox escapeAn integer overflow in the Skia graphics library in Google Chrome before 112.0.5615.137 lets an attacker who already controls the renderer process es…KEVEPSS 5.7%analysed

Source: NIST National Vulnerability Database (record CVE-2021-21120), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.