VU#226679: Microsoft WinRE allows for bypass of UEFI/BIOS password enforcement

Date Jun 22, 2026
Type Coordinated disclosure
Signal Patch review
Vendor / Product Microsoft · WinRE
Patch review

Summary

Overview Microsoft Windows Recovery Environment (WinRE) provides a mechanism for recovering and repairing Windows systems using an alternate boot environment. Under certain platform implementations, access to WinRE may allow an attacker to bypass firmware security controls, including administrator-configured UEFI/BIOS passwords. An attacker with physical or administrative access to a device may be able to leverage WinRE-related boot mechanisms to circumvent firmware protections and gain unauthorized access to system resources. Description Microsoft Windows versions 10 and 11 include the WinRE capability, a recovery platform that supports features such as the F11 recovery menu and the Reset this PC functionalities. WinRE is commonly used for system recovery, troubleshooting, and remote support scenarios. When WinRE is invoked, the system...

Why it matters

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Operator check

Review the CERT/CC Vulnerability Note and compare the affected vendor and product list against your inventory. Apply vendor fixes or compensating controls for WinRE where available.

Sources

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