What’s Vulnerable › Vulnerabilities

CVE-2021-21143

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% 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 Extensions in Google Chrome prior to 88.0.4324.146 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension.

Affected products

• Fedoraproject Fedora: 32, 33
• Google Chrome: before 88.0.4324.146 — fixed in 88.0.4324.146

How to fix

Upgrade to a fixed version: Google Chrome 88.0.4324.146. Check the vendor advisory for mitigations.

References

• https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop.html
• https://crbug.com/1163504
• 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://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop.html
• https://crbug.com/1163504
• 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

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