Full Report
A Vulnerability has been discovered in Google Chrome which could allow for arbitrary code execution. Successful exploitation of the the vulnerability could allow for arbitrary code execution in the context of the logged on user. Depending on the privileges associated with the user an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
Analysis Summary
# Vulnerability: Arbitrary Code Execution in Google Chrome (Type Confusion in V8)
## CVE Details
- CVE ID: CVE-2025-6554
- CVSS Score: N/A (Severity not explicitly provided numerically, but context implies High risk due to active exploitation)
- CWE: N/A (Related to Type Confusion in V8)
## Affected Systems
- Products: Google Chrome
- Versions:
- Windows: Prior to 138.0.7204.96/.97
- Mac: Prior to 138.0.7204.92/.93
- Linux: Prior to 138.0.7204.92
- Configurations: All configurations where the vulnerable versions are running. Impact is higher for users with administrative privileges.
## Vulnerability Description
A Type Confusion vulnerability was discovered in the V8 JavaScript engine component of Google Chrome (CVE-2025-6554). Successful exploitation can lead to **Arbitrary Code Execution (ACE)** within the security context of the logged-on user.
## Exploitation
- Status: **Exploited in the wild** (CISA has added it to the KEV Catalog)
- Complexity: Not explicitly rated, but usually **Medium/High** for type confusion leading to ACE.
- Attack Vector: **Network** (Implied by Chrome vulnerability exploiting Drive-By Compromise T1189)
## Impact
Successful exploitation allows an attacker to execute code as the context of the user, potentially leading to:
- Confidentiality: High (View, change, or delete data)
- Integrity: High (Install programs, change data)
- Availability: Medium/High (Install programs or take actions affecting system stability)
## Remediation
### Patches
Apply the following updates provided by Google immediately after testing:
- Google Chrome version **138.0.7204.96/.97** or later for Windows.
- Google Chrome version **138.0.7204.92/.93** or later for Mac.
- Google Chrome version **138.0.7204.92** or later for Linux.
### Workarounds
- Apply the Principle of Least Privilege: Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack (Mitigation M1026).
- Restrict code execution to a virtual environment (Application Isolation and Sandboxing - M1048).
- Restrict use of certain websites, block downloads/attachments, block Javascript, and restrict browser extensions.
## Detection
- Indicators of Compromise (IOCs): Not specified in the summary, but look for unusual process spawning from the Chrome renderer or high CPU/memory usage indicative of exploit attempts targeting V8.
- Detection Methods and Tools: Use Exploit Protection features (e.g., DEP, WDEG, SIP/Gatekeeper) to detect exploitation attempts (M1050). Monitor for unexpected system calls or file modifications originating from the browser process space.
## References
- Vendor Advisory (Google): hxxps://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html
- CVE Official Entry: hxxps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-6554