A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00097.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
OpenPLC OpenPLC_v3 affected
Version Status Constraints
a931181e8b81e36fadf7b74d5cba99b73c3f6d58 affected
—

No data.

No data.

Vendor Product Confidence Versions
Openplcproject Openplc V3 — —
Openplcproject Openplc V3 Firmware — —

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Tracking

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://talosintelligence.com/vulnerability_reports/TALOS-2025-2223 cve-icon cve-icon
https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2223 cve-icon
History

Mon, 03 Nov 2025 18:30:00 +0000

Type Values Removed Values Added
References

Wed, 08 Oct 2025 13:45:00 +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

Tue, 07 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 07 Oct 2025 14:00:00 +0000

Type Values Removed Values Added
Description A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.
Weaknesses CWE-775
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}
cve-icon MITRE

Status: PUBLISHED

Assigner: talos

Published:

Updated: 2025-11-03T17:44:59.045Z

Reserved: 2025-07-11T21:16:14.229Z

Link: CVE-2025-53476

cve-icon Vulnrichment

Updated: 2025-11-03T17:44:59.045Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-07T14:15:37.270

Modified: 2025-11-03T18:16:58.337

Link: CVE-2025-53476

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-10-08T13:38:41Z

Weaknesses