Is CVE-2025-55221 actively exploited?

No active exploitation of CVE-2025-55221 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-55221 be exploited remotely?

Yes. CVE-2025-55221 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-55221?

CVE-2025-55221 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2025-55221

CWE-306Published: December 1, 2025· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP USB Function functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network packet can lead to a denial of service. An attacker can send an unauthenticated packet to trigger this vulnerability.This vulnerability is specific to the malicious message sent via Modbus TCP over port 502.

NVD Source

Technical Analysis

CVE-2025-55221 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.