CVE-2025-2894Public exploitNetwork attack vector

Authenticated remote takeover via hidden CloudSail tunnel

Published Mar 28, 2025 · Updated Apr 3, 2025

Hidden functionality in Unitree Robotics Go1 2022_05_11_e0d0e617 allows remote authenticated users to take full control through CloudSail. A factory-installed CSClientDaemon establishes an outbound NAT-traversal tunnel that exposes internal robot services to holders of the CloudSail API credential. Possession of that credential is required; the tunnel bypasses inbound firewall and NAT restrictions and grants control of the robotic device.

CVSS severity6.6
Medium
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hidden functionality in Unitree Robotics Go1 2022_05_11_e0d0e617 allows remote authenticated users to take full control through CloudSail. A factory-installed CSClientDaemon establishes an outbound NAT-traversal tunnel that exposes internal robot services to holders of the CloudSail API credential. Possession of that credential is required; the tunnel bypasses inbound firewall and NAT restrictions and grants control of the robotic device.

The record

CVE
CVE-2025-2894
Published
Mar 28, 2025
Updated
Apr 3, 2025
Vendor
Unitree Robotics
Product
Unitree Go1
Classifications
CWE-912, T1219
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2022_05_11_e0d0e617

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Unitree Robotics · Unitree Go1version=2022_05_11_e0d0e617

Published CVSS scores

6.6AHACVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-912Hidden Functionality
T1219Remote Access Software

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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