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

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact High

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00028.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Openplcproject
  • Openplc V3
  • Openplc V3 Firmware

No data.

No data.

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Vendors Products
Openplcproject
  • Openplc V3
  • Openplc V3 Firmware
References
Link Providers
https://github.com/thiagoralves/OpenPLC_v3 cve-icon cve-icon
https://www.cisa.gov/news-events/ics-advisories/icsa-25-273-05 cve-icon cve-icon
History

Thu, 02 Oct 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 02 Oct 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Openplcproject
Openplcproject openplc V3
Openplcproject openplc V3 Firmware
Vendors & Products Openplcproject
Openplcproject openplc V3
Openplcproject openplc V3 Firmware

Wed, 01 Oct 2025 21:30:00 +0000

Type Values Removed Values Added
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.
Title OpenPLC_V3
Weaknesses CWE-758
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.1, '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2025-10-02T15:53:32.988Z

Reserved: 2025-09-23T19:54:22.490Z

Link: CVE-2025-54811

cve-icon Vulnrichment

Updated: 2025-10-02T13:59:42.917Z

cve-icon NVD

Status : Received

Published: 2025-10-01T22:15:31.473

Modified: 2025-10-01T22:15:31.473

Link: CVE-2025-54811

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-10-02T08:38:19Z