What’s Vulnerable › Vulnerabilities

CVE-2021-30632: Google Chromium V8 Out-of-Bounds Write Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 63.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-08 · updated 2026-06-17
• Weakness: CWE-787

Description

Out of bounds write in V8 in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Affected products

• Fedoraproject Fedora: 33, 35
• Google Chrome: before 93.0.4577.82 — fixed in 93.0.4577.82

How to fix

Upgrade to a fixed version: Google Chrome 93.0.4577.82. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/172845/Chrome-JIT-Compiler-Type-Confusion.html
• https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
• https://crbug.com/1247763
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/
• http://packetstormsecurity.com/files/172845/Chrome-JIT-Compiler-Type-Confusion.html
• https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
• https://crbug.com/1247763
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PM7MOYYHJSWLIFZ4TPJTD7MSA3HSSLV2/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30632

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