Microsoft Edge Addresses CVE-2026-106228 Confused Deputy Vulnerability

What Happened

The Chromium project identified CVE-2026-106228, a confused deputy flaw that could allow an attacker to gain elevated privileges by manipulating the browser’s permission model.

Impact

Systems running Microsoft Edge (Chromium-based) could be affected if the browser is not updated to the patched Chromium version. The flaw does not directly expose data but could enable malicious code to act with higher privileges within the browser context.

Mitigation Steps

• Verify that Microsoft Edge is at version 120.0.0 or later (the version that includes the Chromium patch).
• Apply the latest Windows Update that bundles the Edge update.
• Force a browser restart to ensure the new binaries are loaded.
• Reboot the system if the update requires a reboot.

Monitoring & Response

After updating, monitor Edge logs for unexpected privilege escalation attempts and review system event logs for anomalous process creation. If suspicious activity is detected, isolate the machine and run a full malware scan.