Overview
A high severity vulnerability, identified as CVE-2025-10500, has been discovered in Google Chrome’s Dawn engine. This vulnerability is particularly concerning because it enables a remote attacker to potentially exploit heap corruption via a maliciously crafted HTML page. As Google Chrome is one of the most widely used browsers worldwide, this vulnerability has far-reaching implications. If left unchecked, it poses a significant threat to numerous systems and user data, with attackers potentially gaining unauthorized access and compromising system integrity.
Vulnerability Summary
CVE ID: CVE-2025-10500
Severity: High (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Google Chrome | Prior to 140.0.7339.185
How the Exploit Works
The vulnerability lies in Google Chrome’s Dawn engine, specifically in its handling of memory objects. A “use after free” flaw refers to a scenario where memory has been freed or deallocated, but the software continues to use it. This vulnerability can be exploited when a remote attacker crafts a malicious HTML page and lures the user into opening it. Once the page is opened in a vulnerable Google Chrome version, the attacker can trigger a heap corruption. Heap corruption can lead to erratic program behavior, crashes, and in worst cases, arbitrary code execution.
Conceptual Example Code
As an example, an attacker might craft a malicious HTML page and host it on a website. The HTML page could look something like this:
<!DOCTYPE html>
<html>
<body>
<script>
var corruptedHeap = new Array(250);
for (var i = 0; i < 250; i++) {
corruptedHeap[i] = new Uint8Array(1028);
corruptedHeap[i].fill(0x41);
}
</script>
</body>
</html>In this example, the script creates an array of 250 JavaScript typed arrays, each filled with the same byte. This could potentially lead to heap corruption, enabling the attacker to exploit the vulnerability.
Mitigation
Users are strongly advised to update their Google Chrome to the latest version or at least to 140.0.7339.185 to prevent the exploitation of this vulnerability. If an immediate update is not possible, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) could serve as a temporary mitigation. Regular system checks and monitoring for any unusual activity is also recommended.
