CVE-2025-54811
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 10% of all known CVEs.
References
Related Vulnerabilities
Other CWE-758 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2026-22858 | Critical | 9.1 | 0.6% | - | Fix |
| CVE-2023-30624 | Low | 3.9 | 0.4% | - | Fix |
| CVE-2026-4705 | Critical | 9.8 | 0.4% | - | Fix |
| CVE-2025-55160 | Medium | 6.1 | 0.4% | - | Fix |
| CVE-2026-24407 | High | 7.1 | 0.4% | - | Fix |
| CVE-2026-24404 | High | 7.1 | 0.4% | - | Fix |
Embed a live status badge for CVE-2025-54811
Markdown
[](https://tridentstack.com/cve/CVE-2025-54811)HTML
<a href="https://tridentstack.com/cve/CVE-2025-54811"><img src="https://tridentstack.com/cve/badge/CVE-2025-54811.svg" alt="CVE-2025-54811"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-02.