Siemens APOGEE Controllers Integer Underflow (CVE-2026-102073)

high Tenable OT Security Plugin ID 506403

Synopsis

The remote OT asset is affected by a vulnerability.

Description

The affected product web service does not properly validate the length of user-controllable input. This could allow an unauthenticated remote attacker to read portions of device memory or to cause a denial-of-service condition.

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: High

ID: 506403

File Name: tenable_ot_siemens_CVE-2026-102073.nasl

Version: 1.1

Type: Remote

Family: Tenable.ot

Published: 10/20/2026

Updated: 10/20/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.42

CVSS v3

Risk Factor: High

Base Score: 8.2

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

Vulnerability Information

CPE: cpe:/o:siemens:apogee_modular_building_controller_firmware, cpe:/o:siemens:apogee_modular_equiment_controller_firmware, cpe:/o:siemens:apogee_pxc_compact_firmware, cpe:/o:siemens:apogee_pxc_modular_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 10/13/2026

Vulnerability Publication Date: 10/13/2026

Reference Information

CVE: CVE-2026-102073

CWE: 191

Detections

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