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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-54811 Detail

Description

OpenPLC_V3 has a vulnerability in the enipThread function that occurs due to the lack of a return value. This leads to a crash when the server loop ends and execution hits an illegal ud2 instruction. This issue can be triggered remotely without authentication by starting the same server multiple times or if the server exits unexpectedly. The vulnerability allows an attacker to cause a Denial of Service (DoS) against the PLC runtime, stopping any PC started remotely without authentication. This results in the PLC process crashing and halting all automation or control logic managed by OpenPLC.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  ICS-CERT
CVSS-B 6.1 MEDIUM
Vector:  CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/thiagoralves/OpenPLC_v3 ICS-CERT
https://www.cisa.gov/news-events/ics-advisories/icsa-25-273-05 ICS-CERT

Weakness Enumeration

CWE-ID CWE Name Source
CWE-758 Reliance on Undefined, Unspecified, or Implementation-Defined Behavior ICS-CERT  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-54811
NVD Published Date:
10/01/2025
NVD Last Modified:
10/02/2025
Source:
ICS-CERT