Overview
Today, we’ll be discussing a crucial vulnerability, CVE-2025-6558, notable for its potential to compromise systems and leak data. This vulnerability affects Google Chrome versions prior to 138.0.7204.157, and is specifically linked to insufficient validation of untrusted input in ANGLE and GPU. This vulnerability is particularly critical due to its high severity status and its widespread reach, given the global usage of Google Chrome. This could potentially allow a remote attacker to perform a sandbox escape, thereby breaching the security protocols of the system via a carefully crafted HTML page.
Vulnerability Summary
CVE ID: CVE-2025-6558
Severity: High (CVSS score of 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise and data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
Google Chrome | Versions prior to 138.0.7204.157
How the Exploit Works
The exploit leverages insufficient validation of untrusted input within ANGLE and GPU in Google Chrome. Through this, it crafts an HTML page that, when loaded, can escape the confines of the browser’s sandbox. This action potentially allows the attacker to execute arbitrary code on the victim’s machine, leading to system compromise or data leakage.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited. This could be a sample HTTP request that includes a malicious payload in the form of a crafted HTML page.
GET /malicious.html HTTP/1.1
Host: attacker.example.com
Content-Type: text/html
<html>
<body>
<script>
// Malicious code here that exploits the vulnerability
</script>
</body>
</html>In this example, the malicious.html is a crafted HTML page that contains a script exploiting the vulnerability in Google Chrome. When a user visits this page, the script runs and potentially allows the attacker to escape the browser’s sandbox and gain unauthorized access to the victim’s system.
Mitigation and Patch Information
Users are advised to apply the vendor patch as soon as possible to mitigate the risks associated with this vulnerability. This can be done by updating Google Chrome to version 138.0.7204.157 or later. In the meantime, the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation. It’s also important to remain vigilant when visiting unknown URLs, particularly those that prompt for the execution of JavaScript.