Siemens SICAM Q100/Q200

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

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1. EXECUTIVE SUMMARY

• CVSS v4 6.8
• ATTENTION: Low attack complexity
• Vendor: Siemens
• Equipment: SICAM Q100, SICAM Q200
• Vulnerabilities: Cleartext Storage of Sensitive Information

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an authenticated local attacker to extract the SMTP account password and use the configured SMTP service for arbitrary purposes.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports the following products are affected:

• Siemens POWER METER SICAM Q100 (7KG9501-0AA01-0AA1): Versions 2.60 up to but not including 2.62
• Siemens POWER METER SICAM Q100 (7KG9501-0AA01-2AA1): Versions 2.60 up to but not including 2.62
• Siemens POWER METER SICAM Q100 (7KG9501-0AA31-0AA1): Versions 2.60 up to but not including 2.62
• Siemens POWER METER SICAM Q100 (7KG9501-0AA31-2AA1): Versions 2.60 up to but not including 2.62
• Siemens POWER METER SICAM Q200 family: Versions 2.70 up to but not including 2.80

3.2 VULNERABILITY OVERVIEW

3.2.1 CLEARTEXT STORAGE OF SENSITIVE INFORMATION CWE-312

Affected devices store the password for the SMTP account as plain text. This could allow an authenticated local attacker to extract it and use the configured SMTP service for arbitrary purposes.

CVE-2025-40752 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.2 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2025-40752. A base score of 6.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).

3.2.2 CLEARTEXT STORAGE OF SENSITIVE INFORMATION CWE-312

Affected devices export the password for the SMTP account as plain text in the Configuration File. This could allow an authenticated local attacker to extract it and use the configured SMTP service for arbitrary purposes.

CVE-2025-40753 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.2 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2025-40753. A base score of 6.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Energy
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens ProductCERT reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

• POWER METER SICAM Q100 (7KG9501-0AA01-0AA1), POWER METER SICAM Q100 (7KG9501-0AA01-2AA1), POWER METER SICAM Q100 (7KG9501-0AA31-0AA1), POWER METER SICAM Q100 (7KG9501-0AA31-2AA1): Update to V2.62 or later version
• POWER METER SICAM Q200 family: Update to V2.80 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens' operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-529291 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

• Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.
• Locate control system networks and remote devices behind firewalls and isolating them from business networks.
• When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.

5. UPDATE HISTORY

• August 14, 2025: Initial Republication of Siemens ProductCERT SSA-529291

• Siemens