CVE-2022-23918Public exploit

Memory corruption via unchecked protobuf ethAddr copy

Published Aug 5, 2022 · Updated Apr 15, 2025

Stack-based buffer overflow in TCL LINKHUB Mesh Wi-Fi AC1200 MS1G_00_01.00_14 allows remote attackers to corrupt memory via a crafted packet. The confsrv set_mf_rule handler copies the protobuf ethAddr value into an 18-byte stack buffer using the untrusted value's strlen as the memcpy length. Exploitation requires unauthenticated access from an adjacent network and causes stack memory corruption in the router service.

CVSS severity8.8
High
EPSS probability1.27%
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 AC1200 MS1G_00_01.00_14 allows remote attackers to corrupt memory via a crafted packet. The confsrv set_mf_rule handler copies the protobuf ethAddr value into an 18-byte stack buffer using the untrusted value's strlen as the memcpy length. Exploitation requires unauthenticated access from an adjacent network and causes stack memory corruption in the router service.

The record

CVE
CVE-2022-23918
Published
Aug 5, 2022
Updated
Apr 15, 2025
Vendor
TCL
Product
TCL LINKHUB Mesh Wi-Fi AC1200
Classifications
CWE-787, CWE-121, 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

8.8Cisco TalosCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/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-787Out-of-bounds Write
CWE-121Stack-based 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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