Executive brief
Microsoft UFO is an open-source framework used for automating tasks across different devices and platforms. A security flaw in the framework's communication server allows a connected device to request and receive sensitive system information from other devices on the same network. This could allow an attacker to gather technical details like hostnames, internal IP addresses, and operating system versions, which are often used to plan further attacks.
Technical details
A missing authorization check in the Microsoft UFO WebSocket server allows an authenticated client with the 'DEVICE' role to perform actions intended only for 'constellation' (orchestrator) roles. Specifically, the 'DEVICE_INFO_REQUEST' handler in 'ufo/server/ws/handler.py' fails to validate if the requester has the appropriate permissions to access metadata for a specific 'target_id'. An attacker who knows a victim's device ID can retrieve that device's 'system_info', including hostnames, internal IPs, OS versions, and custom metadata. The vulnerability stems from a lack of both function-level and object-level authorization checks in 'handle_device_info_request' and 'get_device_info'. This issue is resolved in version 3.0.6.
Affected products
- Microsoft UFO >= 3.0.0, < 3.0.6
Timeline
- 2026-06-06: patched: Fix committed to main branch and version 3.0.6 released.
- 2026-07-16: disclosed: Advisory published by GitHub and NVD.