CVE-2023-22600

Unauthenticated device control via MQTT topic subscriptions

Published Jan 12, 2023 · Updated Jan 16, 2025

Improper access control in InHand Networks InRouter 302 and 615 allows remote attackers to exchange MQTT messages without authentication. The device manager's MQTT topic authorization accepts unauthenticated subscriptions from devices on the same network when an existing topic name is known. Knowledge of a valid topic name and network access enables reading messages and issuing GET/SET configuration, reboot, and firmware-update commands.

CVSS severity8.1
High
EPSS probability0.49%
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 InHand Networks InRouter 302 and 615 allows remote attackers to exchange MQTT messages without authentication. The device manager's MQTT topic authorization accepts unauthenticated subscriptions from devices on the same network when an existing topic name is known. Knowledge of a valid topic name and network access enables reading messages and issuing GET/SET configuration, reboot, and firmware-update commands.

The record

CVE
CVE-2023-22600
Published
Jan 12, 2023
Updated
Jan 16, 2025
Vendor
InHand Networks
Product
InRouter 302
Classifications
CWE-284, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 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=0 <IR302 V3.5.56

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

InHand Networks · InRouter 302version=0 <IR302 V3.5.56
InHand Networks · InRouter 615version=0 <InRouter6XX-S-V2.3.0.r5542

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1210Exploitation of Remote Services

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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