What’s Vulnerable › Vulnerabilities

CVE-2021-21148: Google Chromium V8 Heap Buffer Overflow Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 20.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-09 · updated 2026-06-17
• Weakness: CWE-787

Description

Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Affected products

• Debian Linux: 10.0
• Fedoraproject Fedora: 32, 33
• Google Chrome: before 88.0.4324.150 — fixed in 88.0.4324.150

How to fix

Upgrade to a fixed version: Google Chrome 88.0.4324.150. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
• https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html
• https://crbug.com/1170176
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/
• https://security.gentoo.org/glsa/202104-08
• https://www.debian.org/security/2021/dsa-4858
• http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
• https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html
• https://crbug.com/1170176
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/

Get alerted when CVE-2021-21148 or the next vulnerability affects your stack