CVE-2025-6554
Google Chromium V8 Type Confusion Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 23 July 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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)
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- EPSS
- 12.72% probability · 96th percentile
- CISA KEV
- Listed 2 July 2025 · due 23 July 2025
- Weakness
- CWE-843
- Affected
- google/chrome
- Source
- chrome-cve-admin@google.com
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html?m=1 ; https://nvd.nist.gov/vuln/detail/CVE-2025-6554
References
- https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.htmlVendor Advisory
- https://issues.chromium.org/issues/427663123Permissions Required
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6554US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.