Full Report
Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary code execution. Google Chrome is a web browser used to access the internet. 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
# Multiple Vulnerabilities in Google Chrome Could Allow for Arbitrary Code Execution
Google Chrome contains multiple vulnerabilities that could allow for arbitrary code execution, with the most severe vulnerability potentially allowing an attacker to install programs, view, change, or delete data, or create new accounts with full user rights.
## Key Points
- Multiple vulnerabilities have been discovered in Google Chrome, including a high-severity vulnerability (CVE-2025-5419) that could allow for arbitrary code execution.
- The most severe of these vulnerabilities could be exploited through drive-by compromise techniques, such as out-of-bounds read and write in V8 and use after free in Blink.
- Successful exploitation of this vulnerability could result in an attacker gaining full user rights, depending on the privileges associated with the user account.
## Threat Actors
- Google is aware that an exploit for CVE-2025-5419 exists in the wild.
- The threat actors behind this vulnerability are not explicitly stated, but it is clear that they are attempting to exploit multiple vulnerabilities in Google Chrome to gain unauthorized access and execute arbitrary code.
## TTPs
- Initial Access: Drive-By Compromise ([T1189](https://learn.cisecurity.org/e/799323/techniques-T1189-/4vd1j4/2458053609/h/-m_DQ2n5c10PLTwG7bOrOr2sdh0zaSd6-DAXxgQkRQc))
- Technique: Use after free in Blink ([T1190](https://learn.cisecurity.org/e/799323/techniques-T1190-/4vd1j5/2458053609/h/-m_DQ2n5c10PLTwG7bOrOr2sdh0zaSd6-DAXxgQkRQc))
- Attack Methods: Out-of-bounds read and write in V8, use after free in Blink.
## Affected Systems
- Chrome prior to 137.0.7151.68/.69 for Windows and Mac
- Chrome prior to 137.0.7151.68 for Linux
## Mitigations
- Apply appropriate updates provided by Google to vulnerable systems immediately after testing.
- Establish and maintain a vulnerability management process for enterprise assets (Safeguard 7.1).
- Perform automated application patch management on a monthly or more frequent basis (Safeguard 7.4).
- Remediate detected vulnerabilities in software through processes and tooling on a monthly or more frequent basis (Safeguard 7.7).
- Ensure only fully supported browsers and email clients are used, and apply the Principle of Least Privilege to all systems and services (Safeguards 9.1 and M1026).
- Manage default accounts on enterprise assets and software, restrict administrator privileges to dedicated administrator accounts, and restrict execution of code to a virtual environment on or in transit to an endpoint system (Safeguards 4.7, 5.4, and M1048).
- Use capabilities to detect and block conditions that may lead to or be indicative of a software exploit occurring (Safeguard M1050).
- Enable anti-exploitation features where possible, such as Microsoft Data Execution Prevention (DEP) and Windows DEP (Safeguard 10.5).
## Conclusion
Google Chrome contains multiple vulnerabilities that could allow for arbitrary code execution, with the most severe vulnerability potentially allowing an attacker to install programs, view, change, or delete data, or create new accounts with full user rights. It is essential to apply updates provided by Google to vulnerable systems immediately after testing and establish a robust vulnerability management process. Additionally, applying the Principle of Least Privilege, managing default accounts, and enabling anti-exploitation features can help mitigate this threat.
# IoCs
- `hxxps://v8[.]google[.]com` (V8)
- `hxxps://blink[.]google[.]com` (Blink)