CVE-2023-3596

Rockwell Automation Allen-Bradley ControlLogix Communication Modules vulnerable to Denial of Service

HIGH
7.5
CVSS Score
Published: July 12, 2023 at 12:51 PM UTC
Updated: June 17, 2026 at 06:14 AM UTC
6 products affected across 1 vendor1756-en4tr Firmware1756-en4trxt Firmware1756-en4trk Firmware

Using 1756-EN4TR Series A by Rockwell Automation?

Get instant alerts when new vulnerabilities affect 1756-EN4TR Series A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 4%
SSVC
No known exploit

Description

Where this vulnerability exists in the Rockwell Automation 1756-EN4* Ethernet/IP communication products, it could allow a malicious user to cause a denial of service by asserting the target system through maliciously crafted CIP messages.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
rockwellautomation-1756-en4trk (same device)
All versions
rockwellautomation-1756-en4trxt (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHRockwell
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card