Siemens SIMATIC S7-1500 CPU 1518 MFP Improper Handling of Structural Elements (CVE-2026-23154)

low Tenable OT Security Plugin ID 505600

Synopsis

The remote OT asset is affected by a vulnerability.

Description

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: Low

ID: 505600

File Name: tenable_ot_siemens_CVE-2026-23154.nasl

Version: 1.1

Type: Remote

Family: Tenable.ot

Published: 7/27/2026

Updated: 7/27/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.52

CVSS v3

Risk Factor: Low

Base Score: 3.3

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

Vulnerability Information

CPE: cpe:/o:siemens:simatic_s7-1500_cpu_firmware:3.1.5, cpe:/o:siemens:simatic_s7-1500_cpu_firmware:3.1.6, cpe:/o:siemens:siplus_s7-1500_cpu_firmware, cpe:/o:siemens:siplus_s7-1500_cpu_firmware:3.1.6

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 6/10/2025

Vulnerability Publication Date: 2/14/2026

Reference Information

CVE: CVE-2026-23154

CWE: 237

Detections

Analytics