Siemens RUGGEDCOM ROS Devices Use of a Broken or Risky Cryptographic Algorithm (CVE-2023-52236)

high Tenable OT Security Plugin ID 503754

Synopsis

The remote OT asset is affected by a vulnerability.

Description

The affected products support insecure cryptographic algorithms. An attacker could leverage these legacy algorithms to achieve a man-in- the-middle attack or impersonate communicating parties.

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 released new versions for several affected products and recommends updating to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not yet available:

- RUGGEDCOM RMC8388 V5.X, RUGGEDCOM RS416Pv2 V5.X, RUGGEDCOM RS416v2 V5.X, RUGGEDCOM RS900 (32M) V5.X, RUGGEDCOM RS900G (32M) V5.X, RUGGEDCOM RSG2100 (32M) V5.X, RUGGEDCOM RSG2100P (32M) V5.X, RUGGEDCOM RSG2288 V5.X, RUGGEDCOM RSG2300 V5.X, RUGGEDCOM RSG2300P V5.X, RUGGEDCOM RSG2488 V5.X, RUGGEDCOM RSG907R, RUGGEDCOM RSG908C, RUGGEDCOM RSG909R, RUGGEDCOM RSG910C, RUGGEDCOM RSG920P V5.X, RUGGEDCOM RSL910, RUGGEDCOM RST2228, RUGGEDCOM RST2228P, RUGGEDCOM RST916C, RUGGEDCOM RST916P: Update to V5.10.0 or later version.
- (CVE-2023-52236): Restrict access to port 80/tcp, 443/tcp and 22/tcp to trusted IP addresses only.
- (CVE-2023-52236, CVE-2025-41222): Deactivate the webserver if not required, and if deactivation is supported by the product.
- (CVE-2023-52236, CVE-2025-41222): Deactivate the SSH server if not required, and if deactivation is supported by the product.
- (CVE-2023-52236, CVE-2025-41222, CVE-2025-41223) RUGGEDCOM i800, RUGGEDCOM i801, RUGGEDCOM i802, RUGGEDCOM i803, RUGGEDCOM M2100, RUGGEDCOM M2200, RUGGEDCOM M969, RUGGEDCOM RMC30, RUGGEDCOM RMC8388 V4.X, RUGGEDCOM RP110, RUGGEDCOM RS1600, RUGGEDCOM RS1600F, RUGGEDCOM RS1600T, RUGGEDCOM RS400, RUGGEDCOM RS401, RUGGEDCOM RS416, RUGGEDCOM RS416P, RUGGEDCOM RS416Pv2 V4.X, RUGGEDCOM RS416v2 V4.X, RUGGEDCOM RS8000, RUGGEDCOM RS8000A, RUGGEDCOM RS8000H, RUGGEDCOM RS8000T, RUGGEDCOM RS900, RUGGEDCOM RS900 (32M) V4.X, RUGGEDCOM RS900G, RUGGEDCOM RS900G (32M) V4.X, RUGGEDCOM RS900GP, RUGGEDCOM RS900L, RUGGEDCOM RS900M-GETS-C01, RUGGEDCOM RS900M-GETS-XX, RUGGEDCOM RS900M-STND-C01, RUGGEDCOM RS900M-STND- XX, RUGGEDCOM RS900W, RUGGEDCOM RS910, RUGGEDCOM RS910L, RUGGEDCOM RS910W, RUGGEDCOM RS920L, RUGGEDCOM RS920W, RUGGEDCOM RS930L, RUGGEDCOM RS930W, RUGGEDCOM RS940G, RUGGEDCOM RS969, RUGGEDCOM RSG2100, RUGGEDCOM RSG2100 (32M) V4.X, RUGGEDCOM RSG2100P, RUGGEDCOM RSG2100P (32M) V4.X, RUGGEDCOM RSG2200, RUGGEDCOM RSG2288 V4.X, RUGGEDCOM RSG2300 V4.X, RUGGEDCOM RSG2300P V4.X, RUGGEDCOM RSG2488 V4.X, RUGGEDCOM RSG920P V4.X: Currently no fix is available.
- (CVE-2025-41222): Restrict access to port 80/tcp, 443/tcp and 22/TCP, to trusted IP addresses only.
- (CVE-2025-41223): Configure the web client to use GCM ciphers; for list of ROS supported cipher suites refer to configuration manual.
- (CVE-2025-41224) RUGGEDCOM RMC8388NC V5.X, RUGGEDCOM RS416NCv2 V5.X, RUGGEDCOM RS416PNCv2 V5.X, RUGGEDCOM RS900GNC(32M) V5.X, RUGGEDCOM RS900NC(32M) V5.X, RUGGEDCOM RSG2100NC(32M) V5.X, RUGGEDCOM RSG2100PNC (32M) V5.X, RUGGEDCOM RSG2288NC V5.X, RUGGEDCOM RSG2300NC V5.X, RUGGEDCOM RSG2300PNC V5.X, RUGGEDCOM RSG2488NC V5.X, RUGGEDCOM RSG920PNC V5.X, RUGGEDCOM RSL910NC: Update to V5.10.0 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-083019 in HTML and CSAF.

Plugin Details

Severity: High

ID: 503754

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 10/27/2025

Updated: 10/28/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

CVSS v3

Risk Factor: High

Base Score: 7

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

Vulnerability Information

CPE: cpe:/o:siemens:ruggedcom_rsg920p:v4, cpe:/o:siemens:ruggedcom_rs910l_firmware, cpe:/o:siemens:ruggedcom_rsg2300:v5, cpe:/o:siemens:ruggedcom_rs416_firmware, cpe:/o:siemens:ruggedcom_rs940g_firmware, cpe:/o:siemens:ruggedcom_rsg2200_firmware, cpe:/o:siemens:ruggedcom_rs900g_firmware, cpe:/o:siemens:ruggedcom_rsg2488:v4, cpe:/o:siemens:ruggedcom_rst916c_firmware, cpe:/o:siemens:ruggedcom_rs8000_firmware, cpe:/o:siemens:ruggedcom_rs1600f_firmware, cpe:/o:siemens:ruggedcom_rs900_firmware, cpe:/o:siemens:ruggedcom_i800_firmware, cpe:/o:siemens:ruggedcom_rmc8388:v5, cpe:/o:siemens:ruggedcom_rs920l_firmware, cpe:/o:siemens:ruggedcom_rsg2300p:v4, cpe:/o:siemens:ruggedcom_rs900l_firmware, cpe:/o:siemens:ruggedcom_m2200_firmware, cpe:/o:siemens:ruggedcom_rsg908c_firmware, cpe:/o:siemens:ruggedcom_rs900gp_firmware, cpe:/o:siemens:ruggedcom_rsg2300:v4, cpe:/o:siemens:ruggedcom_rs416pv2:v4, cpe:/o:siemens:ruggedcom_rsg2300p:v5, cpe:/o:siemens:ruggedcom_rs401_firmware, cpe:/o:siemens:ruggedcom_m969_firmware, cpe:/o:siemens:ruggedcom_i803_firmware, cpe:/o:siemens:ruggedcom_rsg2100_firmware, cpe:/o:siemens:ruggedcom_rs1600t_firmware, cpe:/o:siemens:ruggedcom_rs920w_firmware, cpe:/o:siemens:ruggedcom_i802_firmware, cpe:/o:siemens:ruggedcom_rs416pv2:v5, cpe:/o:siemens:ruggedcom_rs930w_firmware, cpe:/o:siemens:ruggedcom_rs969_firmware, cpe:/o:siemens:ruggedcom_rs8000a_firmware, cpe:/o:siemens:ruggedcom_rsg2288:v5, cpe:/o:siemens:ruggedcom_m2100_firmware, cpe:/o:siemens:ruggedcom_rs416v2:v4, cpe:/o:siemens:ruggedcom_rmc30_firmware, cpe:/o:siemens:ruggedcom_rmc8388:v4, cpe:/o:siemens:ruggedcom_rs8000t_firmware, cpe:/o:siemens:ruggedcom_rst2228_firmware, cpe:/o:siemens:ruggedcom_i801_firmware, cpe:/o:siemens:ruggedcom_rs900w_firmware, cpe:/o:siemens:ruggedcom_rst2228p_firmware, cpe:/o:siemens:ruggedcom_rsg909r_firmware, cpe:/o:siemens:ruggedcom_rsg2288:v4, cpe:/o:siemens:ruggedcom_rsg910c_firmware, cpe:/o:siemens:ruggedcom_rs900m_firmware, cpe:/o:siemens:ruggedcom_rsg2488:v5, cpe:/o:siemens:ruggedcom_rs1600_firmware, cpe:/o:siemens:ruggedcom_rs910w_firmware, cpe:/o:siemens:ruggedcom_rs416v2:v5, cpe:/o:siemens:ruggedcom_rsg2100p_firmware, cpe:/o:siemens:ruggedcom_rs930l_firmware, cpe:/o:siemens:ruggedcom_rst916p_firmware:v5, cpe:/o:siemens:ruggedcom_rs400_firmware, cpe:/o:siemens:ruggedcom_rs8000h_firmware, cpe:/o:siemens:ruggedcom_rsg907r_firmware, cpe:/o:siemens:ruggedcom_rs416p_firmware, cpe:/o:siemens:ruggedcom_rs910_firmware, cpe:/o:siemens:ruggedcom_rsg920p:v5

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 7/8/2025

Reference Information

CVE: CVE-2023-52236

CWE: 327

Detections

Analytics