Siemens SIMATIC S7-1500 TM MFP Improper Input Validation (CVE-2025-21806)

medium Tenable OT Security Plugin ID 503387

Synopsis

The remote OT asset is affected by a vulnerability.

Description

net: let net.core.dev_weight always be non-zero. The following problem was encountered during stability test: (NULL net_device).

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

Solution

Refer to the vendor advisory.

Plugin Details

Severity: Medium

ID: 503387

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 10/23/2025

Updated: 10/23/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v3

Risk Factor: Medium

Base Score: 5.5

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

Vulnerability Information

CPE: cpe:/o:siemens:simatic_s7-1500_tm_mfp

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 4/9/2024

Vulnerability Publication Date: 4/9/2024

Reference Information

CVE: CVE-2025-21806

CWE: 20

Detections

Analytics