CVE-2025-53476

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-07 · updated 2026-10-08
Weakness: CWE-775

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.

Affected products

OpenPLC_v3: a931181e8b81e36fadf7b74d5cba99b73c3f6d58

References

https://talosintelligence.com/vulnerability_reports/TALOS-2025-2223
https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2223

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