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CVE-2026-46538

Microsoft UFO accepts cross-device TASK_END messages by session_id only, allowing peer task-result injection PUBLISHED

Description (CNA)

Microsoft UFO open-source framework for intelligent automation across devices and platforms. In 3.0.1-4-ge2626659, Microsoft UFO's constellation client tracks pending task responses by session_id only and does not verify that a TASK_END message came from the device that originally received the task. When the constellation sends a task to a target device, it records a pending Future under a session key. The pending task record stores the expected device ID, but the completion path ignores that binding. If another authenticated peer device sends a forged TASK_END with the same session_id, the constellation accepts the response and completes the victim device's pending Future with attacker-controlled result data. This is an authenticated cross-device task-result injection issue.

Affected (CNA)

Vendor / productVersions
microsoft / UFOaffected 3.0.1-4-ge2626659

CWE

CWE-294, CWE-345

References

ADP enrichment

CISA-ADP

No English description supplied.