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CVE-2026-46538— Microsoft UFO accepts cross-device TASK_END messages by session_id only, allowing peer task-result injection

CVSS 5.9 · Medium
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I. Basic Information for CVE-2026-46538

Vulnerability Information
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Vulnerability Title
Microsoft UFO accepts cross-device TASK_END messages by session_id only, allowing peer task-result injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用捕获-重放进行的认证绕过
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
microsoftUFO 3.0.1-4-ge2626659 -

II. Public POCs for CVE-2026-46538

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III. Intelligence Information for CVE-2026-46538

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Vendor Advisories for CVE-2026-46538 (1)

Same Patch Batch · microsoft · 2026-05-27 · 6 CVEs total

CVE-2026-464148.8 HIGHMicrosoft UFO WebSocket role spoofing allows authenticated peer task hijacking
CVE-2026-464028.1 HIGHMicrosoft UFO uses untrusted task_name in log paths, allowing authenticated path traversal
CVE-2026-453227.8 HIGHOS Command Injection in Microsoft UFO Shell Action Replay via Stored Session JSON
CVE-2026-464166.3 MEDIUMMicrosoft UFO shared WebSocket handler state causes cross-client response hijacking
CVE-2026-465445.3 MEDIUMMicrosoft UFO reuses client-supplied WebSocket session IDs and replays stale task results

IV. Related Vulnerabilities

Same product: UFO
Same vendor: microsoft
Same weakness: CWE-294

V. Comments for CVE-2026-46538

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