What’s Vulnerable › Vulnerabilities

CVE-2021-30509

• 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: yes
• Published: 2021-06-04 · updated 2026-06-17
• Weakness: CWE-787

Description

Out of bounds write in Tab Strip in Google Chrome prior to 90.0.4430.212 allowed an attacker who convinced a user to install a malicious extension to perform an out of bounds memory write via a crafted HTML page and a crafted Chrome extension.

Affected products

• Fedoraproject Fedora: 33, 34
• Google Chrome: before 90.0.4430.212 — fixed in 90.0.4430.212

How to fix

Upgrade to a fixed version: Google Chrome 90.0.4430.212. Check the vendor advisory for mitigations.

References

• https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop.html
• https://crbug.com/1196309
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
• https://security.gentoo.org/glsa/202107-06
• https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop.html
• https://crbug.com/1196309
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
• https://security.gentoo.org/glsa/202107-06

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