Siemens SIMATIC S7-1500 Always-Incorrect Control Flow Implementation (CVE-2024-56770)

medium Tenable OT Security Plugin ID 504323

Synopsis

The remote OT asset is affected by a vulnerability.

Description

net/sched: netem: The interface fully stops transferring packets and locks. In this case, the child qdisc and tfifo are empty, but 'qlen' indicates the tfifo is at its limit and no more packets are accepted.

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: 504323

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 11/13/2025

Updated: 11/13/2025

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:scalance_xc-300%2fxr-300%2fxc-400%2fxr-500wg%2fxr-500_series_firmware, cpe:/o:siemens:scalance_xcm-%2fxrm-%2fxch-%2fxrh-300_series_firmware, cpe:/o:siemens:siplus_s7-1500_cpu_firmware:3.1.5, cpe:/o:siemens:ruggedcom_rst2428p_firmware:3.2, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:3.1.5

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 12/12/2023

Vulnerability Publication Date: 12/12/2023

Reference Information

CVE: CVE-2024-56770

CWE: 670

Detections

Analytics