CVE-2022-26346

Network factory reset via unauthenticated protobuf command

Published Aug 5, 2022 · Updated Apr 15, 2025

Improper access control in TCL LINKHUB Mesh Wi-Fi AC1200 MS1G_00_01.00_14 allows attackers on its local network to factory-reset mesh nodes. The ucloud_del_node handler accepts an unauthenticated MxpManageList protobuf on port 9003 and treats its attacker-controlled serialNum as authorization to reset the matching node. Access to the router-provided Wi-Fi or wired network is required; a reset restores factory settings and removes network configuration, interrupting service.

CVSS severity9.6
Critical
EPSS probability1.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in TCL LINKHUB Mesh Wi-Fi AC1200 MS1G_00_01.00_14 allows attackers on its local network to factory-reset mesh nodes. The ucloud_del_node handler accepts an unauthenticated MxpManageList protobuf on port 9003 and treats its attacker-controlled serialNum as authorization to reset the matching node. Access to the router-provided Wi-Fi or wired network is required; a reset restores factory settings and removes network configuration, interrupting service.

The record

CVE
CVE-2022-26346
Published
Aug 5, 2022
Updated
Apr 15, 2025
Vendor
TCL
Product
TCL LINKHUB Mesh Wi-Fi AC1200
Classifications
CWE-284, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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=MS1G_00_01.00_14

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TCL · TCL LINKHUB Mesh Wi-Fi AC1200version=MS1G_00_01.00_14

Published CVSS scores

9.6Cisco TalosCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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