Microsoft UFO 3.0.1-4-ge2626659 access control

Summaryinfo

A vulnerability classified as critical was found in Microsoft UFO 3.0.1-4-ge2626659. The affected element is an unknown function. Such manipulation leads to access control. This vulnerability is listed as CVE-2026-46416. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Microsoft UFO 3.0.1-4-ge2626659 and classified as critical. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Microsoft UFO open-source framework for intelligent automation across devices and platforms. In 3.0.1-4-ge2626659, Microsoft UFO creates one shared UFOWebSocketHandler instance and reuses it for multiple authenticated WebSocket connections. The handler stores per-connection protocol objects in mutable instance fields. Each new WebSocket connection overwrites those fields. Later, message handlers send responses through the shared fields instead of through protocol objects bound to the originating connection. As a result, the most recently connected authenticated client can receive protocol responses that belong to another authenticated client.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-46416 since 05/13/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/28/2026). The MITRE ATT&CK project declares the attack technique as T1068.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Microsoft

Name

• UFO

Version

• 3.0.1-4-ge2626659

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://github.com/microsoft/UFO/

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