Siemens SICAM Q100/Q200 Cleartext Storage of Sensitive Information (CVE-2025-40753)

medium Tenable OT Security Plugin ID 504805

Synopsis

The remote OT asset is affected by a vulnerability.

Description

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.

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Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

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.

Plugin Details

Severity: Medium

ID: 504805

File Name: tenable_ot_siemens_CVE-2025-40753.nasl

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 11/18/2025

Updated: 2/14/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v3

Risk Factor: Medium

Base Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: cpe:/o:siemens:power_meter_sicam_q200_series_firmware, cpe:/o:siemens:power_meter_sicam_q100_firmware:2.62

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 8/12/2025

Vulnerability Publication Date: 8/12/2025

Reference Information

CVE: CVE-2025-40753

CWE: 312

ICSA: 25-226-16

Detections

Analytics