CVE-2025-6554: Google Chromium V8 Type Confusion Vulnerability

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: yes — in CISA KEV since 2025-07-02
EPSS: 14.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-30 · updated 2026-06-17
Weakness: CWE-843

Description

Type confusion in V8 in Google Chrome prior to 138.0.7204.96 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)

Affected products

Google Chrome: before 138.0.7204.96; before 138.0.7204.92 — fixed in 138.0.7204.92, 138.0.7204.96

How to fix

Upgrade to a fixed version: Google Chrome 138.0.7204.92, 138.0.7204.96. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html
https://issues.chromium.org/issues/427663123
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6554

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