What’s Vulnerable › Vulnerabilities

CVE-2021-21154

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-22 · updated 2026-06-17
• Weakness: CWE-787

Description

Heap buffer overflow in Tab Strip in Google Chrome prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

Affected products

• Fedoraproject Fedora: 32, 33
• Google Chrome: before 88.0.4324.182 — fixed in 88.0.4324.182

How to fix

Upgrade to a fixed version: Google Chrome 88.0.4324.182. Check the vendor advisory for mitigations.

References

• https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html
• https://crbug.com/1173269
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
• https://security.gentoo.org/glsa/202104-08
• https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html
• https://crbug.com/1173269
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
• https://security.gentoo.org/glsa/202104-08

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