Detections
Analytics

CVE-2021-21220

high

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.

References

https://security.gentoo.org/glsa/202104-08

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/

http://packetstormsecurity.com/files/176210/Chrome-V8-JIT-XOR-Arbitrary-Code-Execution.html

https://www.tenable.com/cyber-exposure/2021-threat-landscape-retrospective

https://github.com/borahll/CVE-2021-21220

https://github.com/JacobTaylor3/CVE-2021-21191---CVE-2021-21192

https://github.com/J0hnFFFF/chrome_cve

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21220

https://crbug.com/1196683

https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html

http://packetstormsecurity.com/files/162437/Google-Chrome-XOR-Typer-Out-Of-Bounds-Access-Remote-Code-Execution.html

Details

Source: Mitre, NVD

Published: 2021-04-26

Updated: 2026-06-17

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

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

Severity: High

EPSS

EPSS: 0.70435