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Rockwell Automation 1756-ENT2R, 1756-EN4TR, 1756-EN4TRXT

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1. EXECUTIVE SUMMARY

  • CVSS v4 7.1
  • ATTENTION: Low attack complexity
  • Vendor: Rockwell Automation
  • Equipment: 1756-ENT2R, 1756-EN4TR, 1756-EN4TRXT
  • Vulnerabilities: Improper Input Validation, Improper Handling of Exceptional Conditions

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could result in an attacker causing a denial of service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following Rockwell Automation products are affected:

  • 1756-ENT2R: Versions prior to 7.001
  • 1756-EN4TR: Versions prior to 7.001
  • 1756-EN4TRXT: Versions prior to 7.001

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER INPUT VALIDATION CWE-20

A security issue exists in the protected mode of 1756-EN4TR and 1756-ENT2R communication modules, where a Concurrent Forward Close operation can trigger a Major Non-Recoverable (MNFR) fault. This condition may lead to unexpected system crashes and loss of device availability.

CVE-2025-8007 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

A CVSS v4 score has also been calculated for CVE-2025-8007. A base score of 7.1 has been calculated; the CVSS vector string is (AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N).

3.2.2 I

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