Siemens SCALANCE LPE9403 Out-of-bounds Read (CVE-2025-40578)

medium Tenable OT Security Plugin ID 503298

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions). Affected devices do not properly handle multiple incoming Profinet packets received in rapid succession. An unauthenticated remote attacker can exploit this flaw by sending multiple packets in a very short time frame, which leads to a crash of the dcpd process.

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: 503298

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 7/24/2025

Updated: 7/24/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v3

Risk Factor: Medium

Base Score: 4.3

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

Vulnerability Information

CPE: cpe:/o:siemens:scalance_lpe9403_firmware:-

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2025

Vulnerability Publication Date: 5/13/2025

Reference Information

CVE: CVE-2025-40578

CWE: 125

Detections

Analytics