Siemens SCALANCE M-800 and SC-600 Families Partial String Comparison (CVE-2025-23384)

low Tenable OT Security Plugin ID 503132

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A remote attacker needs to have access to a valid certificate in order to perform a successful attack.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

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:

- SCALANCE SC-600 family: Currently no fix is available.
- RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2), RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2), SCALANCE M804PB (6GK5804-0AP00-2AA2), SCALANCE M812-1 ADSL-Router family, SCALANCE M816-1 ADSL-Router family, SCALANCE M826-2 SHDSL- Router (6GK5826-2AB00-2AB2), SCALANCE M874-2 (6GK5874-2AA00-2AA2), SCALANCE M874-3 (6GK5874-3AA00-2AA2), SCALANCE M874-3 3G-Router (CN) (6GK5874-3AA00-2FA2), SCALANCE M876-3 (6GK5876-3AA02-2BA2), SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2), SCALANCE M876-4 (6GK5876-4AA10-2BA2), SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2), SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2), SCALANCE MUB852-1 (A1) (6GK5852-1EA10-1AA1), SCALANCE MUB852-1 (B1) (6GK5852-1EA10-1BA1), SCALANCE MUM853-1 (A1) (6GK5853-2EA10-2AA1), SCALANCE MUM853-1 (B1) (6GK5853-2EA10-2BA1), SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1), SCALANCE MUM856-1 (A1) (6GK5856-2EA10-3AA1), SCALANCE MUM856-1 (B1) (6GK5856-2EA10-3BA1), SCALANCE MUM856-1 (CN) (6GK5856-2EA00-3FA1), SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1), SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1), SCALANCE S615 EEC LAN-Router (6GK5615-0AA01-2AA2), SCALANCE S615 LAN-Router (6GK5615-0AA00-2AA2):
Update to V8.2.1 or later version.
- All affected products: Apply a strong password policy for your devices.

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-280834 in HTML and CSAF.

Plugin Details

Severity: Low

ID: 503132

File Name: tenable_ot_siemens_CVE-2025-23384.nasl

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 3/17/2025

Updated: 2/14/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v3

Risk Factor: Low

Base Score: 3.7

Temporal Score: 3.4

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:siemens:scalance_m876-3_firmware:8.2.1, cpe:/o:siemens:scalance_mum853-1_%28a1%29_firmware:8.2.1, cpe:/o:siemens:scalance_mum856-1_%28row%29_firmware:8.2.1, cpe:/o:siemens:ruggedcom_rm1224_lte%284g%29_nam_firmware:8.2.1, cpe:/o:siemens:scalance_m874-3_firmware:8.2.1, cpe:/o:siemens:scalance_mum856-1_%28a1%29_firmware:8.2.1, cpe:/o:siemens:scalance_m874-3_3g-router_%28cn%29_firmware:8.2.1, cpe:/o:siemens:scalance_mub852-1_%28a1%29_firmware:8.2.1, cpe:/o:siemens:scalance_sc-600_series_firmware, cpe:/o:siemens:scalance_m804pb_firmware:8.2.1, cpe:/o:siemens:scalance_m876-4_%28eu%29_firmware:8.2.1, cpe:/o:siemens:scalance_s615_eec_lan-router_firmware:8.2.1, cpe:/o:siemens:scalance_m876-4_%28nam%29_firmware:8.2.1, cpe:/o:siemens:scalance_mum856-1_%28eu%29_firmware:8.2.1, cpe:/o:siemens:scalance_mum853-1_%28b1%29_firmware:8.2.1, cpe:/o:siemens:scalance_m876-3_%28rok%29_firmware:8.2.1, cpe:/o:siemens:scalance_m874-2_firmware:8.2.1, cpe:/o:siemens:scalance_mum856-1_%28cn%29_firmware:8.2.1, cpe:/o:siemens:scalance_m812-1_adsl-router_series_firmware, cpe:/o:siemens:scalance_m876-4_firmware:8.2.1, cpe:/o:siemens:scalance_m826-2_shdsl-router_firmware:8.2.1, cpe:/o:siemens:scalance_mub852-1_%28b1%29_firmware:8.2.1, cpe:/o:siemens:scalance_m816-1_adsl-router_series_firmware, cpe:/o:siemens:ruggedcom_rm1224_lte%284g%29_eu_firmware:8.2.1, cpe:/o:siemens:scalance_mum853-1_%28eu%29_firmware:8.2.1, cpe:/o:siemens:scalance_s615_lan-router_firmware:8.2.1, cpe:/o:siemens:scalance_mum856-1_%28b1%29_firmware:8.2.1

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 3/11/2025

Vulnerability Publication Date: 3/11/2025

Reference Information

CVE: CVE-2025-23384

CWE: 187

ICSA: 25-072-07

Detections

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