CVE-2026-4451
8.8Google · Chrome
A sandbox escape vulnerability exists in Google Chrome due to insufficient validation of untrusted input during navigation, allowing remote attackers to compromise the renderer process.
Executive summary
Google Chrome versions prior to 146.0.7680.153 are vulnerable to a sandbox escape flaw that could allow a remote attacker to achieve full system impact.
Vulnerability
This vulnerability involves insufficient validation of untrusted input within the navigation component, which can be exploited by an unauthenticated remote attacker who has already compromised the renderer process to escape the browser sandbox.
Business impact
Successful exploitation of this vulnerability allows an attacker to break out of the browser sandbox, potentially leading to unauthorized access, data compromise, or full system control. With a CVSS score of 8.8, this flaw represents a high-severity risk that could result in significant reputational damage and widespread data loss if left unpatched in an enterprise environment.
Remediation
Immediate Action: Update all instances of Google Chrome to version 146.0.7680.153 or later immediately to resolve the navigation input validation flaw.
Proactive Monitoring: Security teams should monitor endpoint logs for unusual process execution patterns or unexpected browser behavior that may indicate an attempted sandbox escape.
Compensating Controls: Ensure that browser-based security policies are enforced, including the use of endpoint protection software that can detect malicious renderer process activity or unauthorized navigation attempts.
Exploitation status
Public Exploit Available: No
Analyst recommendation
The risk posed by a sandbox escape in a widely used browser like Chrome is substantial, as it allows attackers to bypass core security boundaries. Organizations must prioritize the deployment of the provided security update across all workstations to eliminate the vulnerability and prevent potential exploitation.