Rockwell Automation 1756-ENT2R, 1756-EN4TR, 1756-EN4TRXT Improper Handling of Exceptional Conditions (CVE-2025-8008)

medium Tenable OT Security Plugin ID 503330

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A security issue exists in the protected mode of EN4TR devices, where sending specifically crafted messages during a Forward Close operation can cause the device to crash.

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

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Rockwell Automation recommends users upgrade their devices to 7.001 or later. The update can be downloaded from Rockwell Automation's website.

Rockwell Automation also recommends users follow their published Security Best Practices.

Plugin Details

Severity: Medium

ID: 503330

Version: 1.3

Type: remote

Family: Tenable.ot

Published: 9/17/2025

Updated: 9/18/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v3

Risk Factor: Medium

Base Score: 6.5

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

Vulnerability Information

CPE: cpe:/o:rockwellautomation:1756-en2tr_series_c_firmware, cpe:/o:rockwellautomation:1756-en2tr_series_a_firmware, cpe:/o:rockwellautomation:1756-en2tr_series_b_firmware, cpe:/o:rockwellautomation:1756-en4tr_firmware, cpe:/o:rockwellautomation:1756-en4trxt_firmware

Required KB Items: Tenable.ot/Rockwell

Exploit Ease: No known exploits are available

Patch Publication Date: 9/9/2025

Vulnerability Publication Date: 9/9/2025

Reference Information

CVE: CVE-2025-8008

CWE: 755

Detections

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