Rockwell Automation 1756-ENT2R, EN4TR, EN4TRXT Vulnerability
Priority LOW 31CWE-20Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A security issue exists in the protected mode of 1756-EN4TR and 1756-EN2TR 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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0026 17th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Rockwell | 1756-ENT2R, 1756-EN4TR, 1756-EN4TRXT | up to 6.001 | — | No fix listed | CNA |
- 1756-ENT2R, 1756-EN4TR, 1756-EN4TRXT VendorRockwell Affected up to 6.001 Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:rockwellautomation:1756-en2tr_series_a_firmware:*:*:*:*:*:*:*:* | before 7.001 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:1756-en2tr_series_a:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:1756-en2tr_series_b_firmware:*:*:*:*:*:*:*:* | before 7.001 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:1756-en2tr_series_b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:1756-en2tr_series_c_firmware:*:*:*:*:*:*:*:* | before 7.001 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:1756-en2tr_series_c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:1756-en4tr_firmware:*:*:*:*:*:*:*:* | before 7.001 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:1756-en4tr:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:1756-en4trxt_firmware:*:*:*:*:*:*:*:* | before 7.001 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:1756-en4trxt:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
- cpe:2.3:o:rockwellautomation:1756-en2tr_series_a_firmware:*:*:*:*:*:*:*:* Versions before 7.001 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:1756-en2tr_series_a:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:1756-en2tr_series_b_firmware:*:*:*:*:*:*:*:* Versions before 7.001 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:1756-en2tr_series_b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:1756-en2tr_series_c_firmware:*:*:*:*:*:*:*:* Versions before 7.001 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:1756-en2tr_series_c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:1756-en4tr_firmware:*:*:*:*:*:*:*:* Versions before 7.001 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:1756-en4tr:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:1756-en4trxt_firmware:*:*:*:*:*:*:*:* Versions before 7.001 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:1756-en4trxt:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-8007
- 2026-10-03 Alias added: GHSA-424r-cv4h-2fmw
References
More Rockwell 1756-en2tr Series A Firmware vulnerabilities
- TI-2018-12755 Missing authentication in Rockwell Automation CVSS 3.1HIGH 8.6
- TI-2023-02121 Rockwell Automation Select Logix Communication Modules Vulnerable to Email Object Buffer Overflow CVSS 3.1CRITICAL 9.8
- TI-2023-03355 Rockwell Automation ControlLogix Communication Modules Vulnerable to Remote Code Execution CVSS 3.1CRITICAL 9.8
- TI-2025-07328 Rockwell Automation 1756-ENT2R, EN4TR, EN4TRXT Vulnerability CVSS 4.0HIGH 7.1
Sources
- CVE-2025-8007 · CVE Program
- CVE-2025-8007 · NVD
- FIRST EPSS
- GHSA-424r-cv4h-2fmw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences