Siemens RUGGEDCOM ROS Improper Input Validation (CVE-2025-40935)

medium Tenable OT Security Plugin ID 504917

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Affected devices do not properly validate input during the TLS certificate upload process of the web service. This could allow an authenticated remote attacker to trigger a device crash and reboot, leading to a temporary Denial of Service on the device.

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.

Plugin Details

Severity: Medium

ID: 504917

File Name: tenable_ot_siemens_CVE-2025-40935.nasl

Version: 1.3

Type: remote

Family: Tenable.ot

Published: 1/9/2026

Updated: 2/17/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2025-40935

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

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

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

Vulnerability Information

CPE: cpe:/o:siemens:ruggedcom_rs900_%2832m%29_v5.x_firmware, cpe:/o:siemens:ruggedcom_rsg2100p_%2832m%29_v5.x_firmware, cpe:/o:siemens:ruggedcom_rsg910c_firmware, cpe:/o:siemens:ruggedcom_rst916p_firmware, cpe:/o:siemens:ruggedcom_rsg920p_v5.x_firmware, cpe:/o:siemens:ruggedcom_rst2228p_firmware, cpe:/o:siemens:ruggedcom_rmc8388_v5.x_firmware, cpe:/o:siemens:ruggedcom_rsg907r_firmware, cpe:/o:siemens:ruggedcom_rsg2488_v5.x_firmware, cpe:/o:siemens:ruggedcom_rst916c_firmware, cpe:/o:siemens:ruggedcom_rsg2288_v5.x_firmware, cpe:/o:siemens:ruggedcom_rst2228_firmware, cpe:/o:siemens:ruggedcom_rs416pv2_v5.x_firmware, cpe:/o:siemens:ruggedcom_rsg909r_firmware, cpe:/o:siemens:ruggedcom_rsg908c_firmware, cpe:/o:siemens:ruggedcom_rsg2100_%2832m%29_v5.x_firmware, cpe:/o:siemens:ruggedcom_rs416v2_v5.x_firmware, cpe:/o:siemens:ruggedcom_rsg2300p_v5.x_firmware, cpe:/o:siemens:ruggedcom_rsg2300_v5.x_firmware, cpe:/o:siemens:ruggedcom_rs900g_%2832m%29_v5.x_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 12/9/2025

Vulnerability Publication Date: 12/9/2025

Reference Information

CVE: CVE-2025-40935

CWE: 20

Detections

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