CVE-2023-22599Network attack vector

MQTT credential disclosure via predictable MD5 salt

Published Jan 12, 2023 · Updated Jan 16, 2025

Predictable hashing in InHand Networks InRouter 302 before 3.5.56 and InRouter 615 before 2.3.0.r5542 lets remote attackers obtain MQTT credentials. The HTTP/HTTPS response encodes those credentials with MD5 and a hardcoded, predictable salt, allowing the derived value to be calculated. No authentication or user interaction is required, but the cloud-platform request must be spoofed; exposed credentials permit receipt of potentially sensitive MQTT commands and can temporarily disconnect the device.

CVSS severity7.0
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Predictable hashing in InHand Networks InRouter 302 before 3.5.56 and InRouter 615 before 2.3.0.r5542 lets remote attackers obtain MQTT credentials. The HTTP/HTTPS response encodes those credentials with MD5 and a hardcoded, predictable salt, allowing the derived value to be calculated. No authentication or user interaction is required, but the cloud-platform request must be spoofed; exposed credentials permit receipt of potentially sensitive MQTT commands and can temporarily disconnect the device.

The record

CVE
CVE-2023-22599
Published
Jan 12, 2023
Updated
Jan 16, 2025
Vendor
InHand Networks
Product
InRouter 302
Classifications
CWE-760, T1190
Attack vector
network
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 vectornetwork
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

7.0ICS-CERTCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-760Use of a One-Way Hash with a Predictable Salt
T1190Exploit Public-Facing Application

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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