CVE-2026-78956

8.8

Google · Chrome

A type confusion vulnerability in the V8 engine of Google Chrome allows remote attackers to execute arbitrary code via a crafted HTML page.

Executive summary

A high-severity type confusion vulnerability in Google Chrome's V8 engine could allow a remote attacker to achieve arbitrary code execution through social engineering.

Vulnerability

This is a type confusion flaw (CWE-843) occurring within the V8 JavaScript engine. An unauthenticated remote attacker can exploit this by enticing a user to navigate to a malicious HTML page, triggering memory corruption that allows for arbitrary code execution within the browser sandbox.

Business impact

The potential for arbitrary code execution presents a significant risk to organizational security, as it could lead to full system compromise or unauthorized access to sensitive user data stored within the browser. Given the CVSS score of 8.8, this vulnerability is classified as High, indicating that while it requires user interaction, the impact of a successful exploit is severe.

Remediation

Immediate Action: Update Google Chrome to version 152.0.7977.65 or later immediately to incorporate the necessary security patches.

Proactive Monitoring: Monitor endpoint security logs for unexpected browser process behavior or unauthorized attempts to load external scripts from untrusted domains.

Compensating Controls: Deploy endpoint protection platforms that can detect and block malicious web-based content, and utilize browser-level security policies to restrict the execution of untrusted JavaScript.

Exploitation status

Public Exploit Available: No (exploit_available: false)

Analyst recommendation

This vulnerability represents a significant risk due to the potential for arbitrary code execution within the browser environment. IT administrators should prioritize the deployment of the latest Chrome update across all managed devices to ensure the V8 engine is secured against this type confusion flaw. Failure to apply this update leaves users exposed to potential drive-by download attacks.

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Sources