CVE-2024-31486Network attack vector

MQTT credential disclosure via insufficient password protection

Published May 14, 2024 · Updated Nov 3, 2025

Cleartext credential storage in Siemens SICAM OPUPI0 AMQP/MQTT before 5.30 allows attackers to retrieve MQTT client passwords. The device stores MQTT client passwords without sufficient protection; Siemens has not disclosed the exact storage locus or protection failure. Remote shell access or physical access is required, and successful retrieval exposes only the stored MQTT credentials.

CVSS severity5.3
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cleartext credential storage in Siemens SICAM OPUPI0 AMQP/MQTT before 5.30 allows attackers to retrieve MQTT client passwords. The device stores MQTT client passwords without sufficient protection; Siemens has not disclosed the exact storage locus or protection failure. Remote shell access or physical access is required, and successful retrieval exposes only the stored MQTT credentials.

The record

CVE
CVE-2024-31486
Published
May 14, 2024
Updated
Nov 3, 2025
Vendor
Siemens
Product
SICAM OPUPI0 AMQP/MQTT
Classifications
CWE-312, CAPEC-37, T1555
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V5.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SICAM OPUPI0 AMQP/MQTTversion=0 <V5.30

Published CVSS scores

5.3Siemens AGCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
6.0Siemens AGCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
CAPEC-37Retrieve Embedded Sensitive Data
T1555Credentials from Password Stores

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo