CVE-2026-12466
Google · Chrome
A heap buffer overflow vulnerability exists in the WebRTC component of Google Chrome on Windows, potentially allowing for arbitrary code execution.
Executive summary
A heap buffer overflow in the Google Chrome WebRTC component poses a significant risk of remote code execution on affected Windows systems.
Vulnerability
This is a heap buffer overflow vulnerability located within the WebRTC implementation of the browser. It likely requires a user to interact with malicious web content to trigger the memory corruption flaw.
Business impact
A successful exploit of this vulnerability could allow an attacker to execute arbitrary code within the context of the browser. Given the CVSS score of 8.8, this represents a high-severity risk that could lead to full system compromise, data exfiltration, or the installation of persistent malware on user endpoints.
Remediation
Immediate Action: Update all instances of Google Chrome on Windows to version 149 or later immediately.
Proactive Monitoring: Monitor endpoint logs for suspicious child processes spawned by the Google Chrome browser or unusual network activity following web browsing sessions.
Compensating Controls: Ensure that Endpoint Detection and Response (EDR) solutions are active to identify and block memory-based exploitation attempts.
Exploitation status
Public Exploit Available: false
Analyst recommendation
Browser-based vulnerabilities are frequent targets for threat actors seeking initial access. IT administrators must prioritize the deployment of the latest Chrome security updates to all managed endpoints to mitigate the risk of arbitrary code execution.