Google recently released an emergency security update addressing a high-severity vulnerability, tracked as CVE-2026-125350, a use-after-free vulnerability affecting Chrome’s XML component.

Through this blog, we will understand what the actively exploited zero-day in Chrome is about, the threat it poses, and what organizations can do.

About the vulnerability

This flaw is a use-after-free vulnerability that occurs due to memory management mistake in Chrome. On November 9th, 2026, Google released a Chrome security update addressing nine vulnerabilities.

What an attacker can do with this vulnerability?

An attacker can:

• Target unpatched users with vulnerable Chrome installations.
• Execute arbitrary code subject to Chrome’s security permissions and restrictions.
• Cause Google Chrome to stop working or crash.
• Corrupt the data stored in the browser’s memory.
• Use the browser exploitation as a starting point for broader system compromise.

SharkStriker’s recommendations

• Prioritize Chrome Updates: Immediately identify and update vulnerable Chrome installations across organizational endpoints.
• Verify Patch Deployment: Confirm that the applicable patched versions are installed and that browser restarts have completed successfully.
• Monitor Chromium-Based Browsers: Review other Chromium-based browser deployments and apply vendor-issued security updates when available.
• Strengthen Endpoint Monitoring: Monitor suspicious browser child processes, unexpected executable creation, and unusual process behavior.
• Restrict Unnecessary Browser Extensions: Allow only approved extensions and periodically review installed browser add-ons.
• Improve Web Security: Maintain web filtering, malicious URL protection, and endpoint security controls to reduce exposure to suspicious web content.
• Maintain Asset Visibility: Use centralized software inventory and vulnerability management processes to identify outdated browser installations.
• Investigate Suspicious Activity: Review endpoint and network telemetry for unusual behavior associated with Chrome, particularly on systems that remained unpatched after the vulnerability disclosure.