Full Report
Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary code execution. Successful exploitation of the most severe of these vulnerabilities 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: Multiple Flaws in Google Chrome Leading to Arbitrary Code Execution
## CVE Details
(Note: Severity scores were not explicitly provided for all CVEs, only the most severe flaw is noted below based on context.)
- CVE ID: CVE-2025-6558 (Most severe, exploited in the wild)
- CVSS Score: N/A (Severity inferred: High due to ACE)
- CWE: N/A
Additional Identified CVEs:
- CVE-2025-7656 (Integer overflow in V8)
- CVE-2025-7657 (Use after free in WebRTC)
## Affected Systems
- Products: Google Chrome
- Versions: Prior to 138.0.7204.157/.158 for Windows and Mac; Prior to 138.0.7204.157 for Linux.
- Configurations: Affects standard browser execution environments.
## Vulnerability Description
Multiple vulnerabilities exist in Google Chrome. The most critical flaw, **CVE-2025-6558** (Incorrect validation of untrusted input in ANGLE and GPU), along with other issues like an Integer overflow in V8 (CVE-2025-7656) and a Use after free in WebRTC (CVE-2025-7657), can collectively lead to **Arbitrary Code Execution (ACE)**. Successful exploitation grants an attacker code execution within the context of the logged-on user. This allows the attacker to install programs, modify/delete data, or create new user accounts, depending on the victim user's permissions (administrative users face the highest risk).
## Exploitation
- Status: **Exploited in the wild** (Specifically noted for CVE-2025-6558)
- Complexity: Not explicitly stated, but exploitation capable of ACE generally implies Medium to High complexity, though the presence in the wild suggests functional exploit chains exist.
- Attack Vector: Implied to be Network/Adjacent via Drive-By Compromise (TA0001/T1189).
## Impact
- Confidentiality: High (Potential to view, change, or delete sensitive user data)
- Integrity: High (Potential to install programs or change system data)
- Availability: Medium (Potential for service interruption, though data destruction is the primary impact)
## Remediation
### Patches
- Apply Google Chrome updates to:
- **138.0.7204.157/.158** or later (Windows and Mac)
- **138.0.7204.157** or later (Linux)
### Workarounds
- Apply the Principle of Least Privilege: Restrict user accounts from having administrative rights where possible, as this limits the ultimate impact of a successful exploit.
- Run all software, including the browser, as a non-privileged user.
## Detection
- **Indicators of Compromise (IOCs):** Not explicitly listed, but monitoring for suspicious process creation originating from the Chrome process space is recommended.
- **Detection Methods and Tools:**
- Enable and monitor anti-exploitation features (DEP, WDEG, Apple System Integrity Protection).
- Use Exploit Protection monitoring capabilities (M1050).
## References
- CVE: https://cve-mitre-org/cgi-bin/cvename-cgi-name=CVE-2025-7656
- CVE: https://cve-mitre-org/cgi-bin/cvename-cgi-name=CVE-2025-6558
- CVE: https://cve-mitre-org/cgi-bin/cvename-cgi-name=CVE-2025-7657
- Google Advisory: https://chromereleases-googleblog-com/2025/07/stable-channel-update-for-desktop-15-html