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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.

PUBLISHED Reserved 2025-07-11 | Published 2025-10-07 | Updated 2025-11-03 | Assigner talos




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem types

CWE-775: Missing Release of File Descriptor or Handle after Effective Lifetime

Product status

a931181e8b81e36fadf7b74d5cba99b73c3f6d58
affected

Credits

Discovered by a member of Cisco Talos.

References

www.talosintelligence.com/...ability_reports/TALOS-2025-2223

talosintelligence.com/vulnerability_reports/TALOS-2025-2223

cve.org (CVE-2025-53476)

nvd.nist.gov (CVE-2025-53476)

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