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CVE-2025-7657: High Severity Vulnerability in Google Chrome’s WebRTC Component

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Overview

The vulnerability identified as CVE-2025-7657 is a high severity issue found in Google Chrome’s WebRTC component. This flaw has been reported to affect previous versions of Google Chrome prior to 138.0.7204.157. It is a use after free vulnerability that could potentially allow a remote attacker to exploit heap corruption via a maliciously crafted HTML page. This vulnerability is particularly concerning due to its high severity rating of 8.8 on the Common Vulnerability Scoring System (CVSS) scale and its potential to possibly compromise system integrity or leak sensitive data.
The growing reliance on web browsers for day-to-day tasks, both personal and professional, makes a vulnerability of this magnitude a significant concern. Google Chrome, being one of the most popular web browsers globally, potentially exposes millions of users to this security flaw if left unpatched.

Vulnerability Summary

CVE ID: CVE-2025-7657
Severity: High (CVSS Score: 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 138.0.7204.157

How the Exploit Works

The exploit takes advantage of a use after free vulnerability in Google Chrome’s WebRTC component. Specifically, it manipulates the handling of memory in the component, causing heap corruption. An attacker can craft a malicious HTML page, which, when loaded by a user in the vulnerable browser, triggers the vulnerability. This could potentially allow the attacker to execute arbitrary code in the context of the browser, leading to system compromise or data leakage.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This is a hypothetical scenario where a user is tricked into visiting a malicious webpage, which contains the malicious payload.

GET /malicious_page.html HTTP/1.1
Host: attacker.example.com
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5

The `malicious_page.html` would contain a script that exploits the vulnerability in Google Chrome’s WebRTC component, potentially leading to heap corruption and further exploitation. Users are strongly advised to update their Google Chrome browser to the latest version to mitigate this security risk.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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