Overview
The vulnerability, identified as CVE-2025-4609, is a serious flaw that affects Google Chrome on Windows. It’s rooted in the incorrect handle provision under unspecified circumstances in Mojo, a key component of Google Chrome. This vulnerability can potentially be exploited by remote attackers to perform a sandbox escape through a malicious file, posing significant threats to the user’s system security and data integrity.
The severity of this vulnerability is high, as it grants the attacker a considerable degree of control over the compromised system. This can lead to a variety of negative outcomes such as unauthorized access to sensitive data, manipulation of system functionalities, or even a complete system takeover.
Vulnerability Summary
CVE ID: CVE-2025-4609
Severity: High (CVSS 9.6)
Attack Vector: Remote
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
Google Chrome | Prior to 136.0.7103.113
How the Exploit Works
The exploit works by exploiting the incorrect handle provision in Mojo in Google Chrome. A handle is a reference to an object and is used by programs to access system resources. If an attacker can manipulate this handle, they can cause the system to behave in unintended ways.
In this case, the incorrect handle can allow an attacker to escape the sandbox environment that Chrome uses to isolate potentially harmful code. This is achieved by the attacker sending a malicious file that exploits this vulnerability, allowing them to execute code outside of the sandbox and potentially gain control over the affected system.
Conceptual Example Code
A conceptually simplified example might look something like this:
POST /malicious/file HTTP/1.1
Host: target.example.com
Content-Type: application/octet-stream
{ "malicious_payload": "EXPLOIT-CODE-HERE" }In this example, “EXPLOIT-CODE-HERE” would be replaced with the actual malicious code that exploits the vulnerability in the handle provision. This malicious file is then sent to the target system, where it can potentially escape the sandbox environment of the browser and execute malicious actions on the system.
Please note that this is a conceptual example and is oversimplified. The actual exploit would involve more complex techniques and malicious code to successfully exploit the vulnerability.