CVE-2022-24021Public exploit

Unauthenticated code execution via unchecked GetValue copy

Published Aug 5, 2022 · Updated Apr 15, 2025

Stack-based buffer overflow in TCL LINKHUB Mesh Wi-Fi MS1G_00_01.00_14 allows remote attackers to execute code via crafted configuration data. In the online_process binary, GetValue copies as many as 0x5dc bytes from a flash configuration variable into a caller-supplied buffer without receiving or checking its size. Reachability requires access to the router's Wi-Fi or wired network and the ability to send application-style protobuf messages to port 9003; triggering the overwrite can seize control of execution.

CVSS severity9.6
Critical
EPSS probability1.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in TCL LINKHUB Mesh Wi-Fi MS1G_00_01.00_14 allows remote attackers to execute code via crafted configuration data. In the online_process binary, GetValue copies as many as 0x5dc bytes from a flash configuration variable into a caller-supplied buffer without receiving or checking its size. Reachability requires access to the router's Wi-Fi or wired network and the ability to send application-style protobuf messages to port 9003; triggering the overwrite can seize control of execution.

The record

CVE
CVE-2022-24021
Published
Aug 5, 2022
Updated
Apr 15, 2025
Vendor
TCL
Product
TCL LINKHUB Mesh Wi-Fi AC1200
Classifications
CWE-120, T1210
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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1210Exploitation of Remote Services

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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