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7.5

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...

CVE-2023-3596 · published 3 years ago
Summary


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.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
rockwellautomation 1756-en4tr_firmware All versions
cpe:2.3:o:rockwellautomation:1756-en4tr_firmware:-:*:*:*:*:*:*:*
rockwellautomation 1756-en4trk_firmware All versions
cpe:2.3:o:rockwellautomation:1756-en4trk_firmware:-:*:*:*:*:*:*:*
rockwellautomation 1756-en4trxt_firmware All versions
cpe:2.3:o:rockwellautomation:1756-en4trxt_firmware:-:*:*:*:*:*:*:*
Original advisory text
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...

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.

References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
7.5 High
Exploitation
4% chance of attack within 30 days
Type
CWE-787Out-of-bounds Write
Timeline
Published12 Jul 2023
Updated23 Oct 2026
First seen29 Sep 2026
Sources
CVE-2023-3596 · NVD
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