🛡️ CVE-2023-38744
🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-1284 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Denial-of-service (DoS) vulnerability due to improper validation of specified type of input issue exists in the built-in EtherNet/IP port of the CJ Series CJ2 CPU unit and the communication function of the CS/CJ Series EtherNet/IP unit. If an affected product receives a packet which is specially crafted by a remote unauthenticated attacker, the unit of the affected product may fall into a denial-of-service (DoS) condition. Affected products/versions are as follows: CJ2M CPU Unit CJ2M-CPU3[] Unit version of the built-in EtherNet/IP section Ver. 2.18 and earlier, CJ2H CPU Unit CJ2H-CPU6[]-EIP Unit version of the built-in EtherNet/IP section Ver. 3.04 and earlier, CS/CJ Series EtherNet/IP Unit CS1W-EIP21 V3.04 and earlier, and CS/CJ Series EtherNet/IP Unit CJ1W-EIP21 V3.04 and earlier.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-1284
Public Exploit ✅ No
Source NVD
Published 2023-08-03
Updated 2026-06-08
Modified 2024-11-21
Fix URL N/A

Affected Packages

Software From version Fixed in
cj1w-eip21-firmware 3.04
cj2h-cpu64-eip-firmware 3.04
cj2h-cpu65-eip-firmware 3.04
cj2h-cpu66-eip-firmware 3.04
cj2h-cpu67-eip-firmware 3.04
cj2h-cpu68-eip-firmware 3.04
cj2m-cpu31-firmware 2.18
cj2m-cpu32-firmware 2.18
cj2m-cpu33-firmware 2.18
cj2m-cpu34-firmware 2.18
cj2m-cpu35-firmware 2.18
cs1w-eip21-firmware 3.04

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