CVE-2025-54811

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/thiagoralves/OpenPLC_v3
https://www.cisa.gov/news-events/ics-advisories/icsa-25-273-05

Configurations

No configuration.

History

01 Oct 2025, 22:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-01 22:15

Updated : 2025-10-02 19:11

NVD link : CVE-2025-54811

Mitre link : CVE-2025-54811

CVE.ORG link : CVE-2025-54811

JSON object : View

Products Affected

No product.

CWE

CWE-758

Reliance on Undefined, Unspecified, or Implementation-Defined Behavior

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