A use after free vulnerability in the V8 engine of Google Chrome prior to version 148.0.7778.96 allows remote attackers to achieve arbitrary code execution via a malicious browser extension.

This is a use after free vulnerability, categorized as CWE-416, occurring within the V8 JavaScript engine. An unauthenticated attacker can exploit this flaw by convincing a user to install a crafted Chrome extension, requiring user interaction to trigger the condition.

The exploitation of this vulnerability can lead to a complete compromise of the browser application context, allowing attackers to execute arbitrary code with the privileges of the user. While the CVSS score of 8.8 indicates a high severity risk involving potential confidentiality, integrity, and availability loss, the requirement for user interaction through extension installation slightly mitigates the attack vector. Unpatched systems expose the organization to potential client side attacks, session hijacking, and lateral movement from compromised endpoints.

Immediate Action: Update Google Chrome to version 148.0.7778.96 or later by applying the official vendor security update.

Proactive Monitoring: Monitor endpoint software inventories to ensure all instances of Google Chrome are running supported, patched versions.

Compensating Controls: Enforce strict browser extension installation policies via enterprise group policy or endpoint management tools to prevent unauthorized extensions from being installed.

Public Exploit Available: false

Given the high CVSS score and the potential for arbitrary code execution, security teams must treat this vulnerability with urgency. Administrators should immediately deploy the latest browser updates across all managed endpoints to neutralize the underlying V8 memory corruption risk.