WebUSB must be disabled.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-235742	SRG-APP-000141	EDGE-00-000025	SV-235742r960963_rule	2024-09-13	2

Description
Set whether websites can access connected USB devices. Access can be blocked completely or the user asked each time a website wants to get access to connected USB devices. Override this policy for specific URL patterns by using the WebUsbAskForUrls and WebUsbBlockedForUrls policies. If this policy is not configured, sites can ask users whether they can access the connected USB devices ('AskWebUsb') by default, and users can change this setting.

Description

Set whether websites can access connected USB devices. Access can be blocked completely or the user asked each time a website wants to get access to connected USB devices. Override this policy for specific URL patterns by using the WebUsbAskForUrls and WebUsbBlockedForUrls policies. If this policy is not configured, sites can ask users whether they can access the connected USB devices ('AskWebUsb') by default, and users can change this setting.

ℹ️ Check
The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Content settings/Control use of the WebUSB API" must be set to "enabled" with the option value set to "Do not allow any site to request access to USB devices via the WebUSB API". Use the Windows Registry Editor to navigate to the following key: HKLM\SOFTWARE\Policies\Microsoft\Edge If the value for "DefaultWebUsbGuardSetting" is not set to "REG_DWORD = 2", this is a finding.

ℹ️ Check

The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Content settings/Control use of the WebUSB API" must be set to "enabled" with the option value set to "Do not allow any site to request access to USB devices via the WebUSB API". Use the Windows Registry Editor to navigate to the following key: HKLM\SOFTWARE\Policies\Microsoft\Edge If the value for "DefaultWebUsbGuardSetting" is not set to "REG_DWORD = 2", this is a finding.

✔️ Fix
Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Content settings/Control use of the WebUSB API" to enabled" and select "Do not allow any site to request access to USB devices via the WebUSB API".