What is CVE-2025-55221?

CVE-2025-55221 is a high-severity vulnerability in Socomec Diris Digiware M-70, classified under Missing Authentication for Critical Function. CVSS score: 8.6/10. Published 2025-12-01.

How severe is CVE-2025-55221?

High severity. CVSS v3 base score is 8.6 out of 10.

Auth bypass in Socomec Diris Digiware M-70

CVE-2025-55221

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.

Vulnerability class: Broken Authentication

EPSS: 0.004 (29.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Socomec Diris Digiware M-70 — versions 1.6.9
Socomec Diris_m-70
Socomec Diris_m-70_firmware — versions 1.6.9

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

talos-cna@cisco.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-55221?: CVE-2025-55221 is a high-severity vulnerability in Socomec Diris Digiware M-70, classified under Missing Authentication for Critical Function. CVSS score: 8.6/10. Published 2025-12-01.
How severe is CVE-2025-55221?: High severity. CVSS v3 base score is 8.6 out of 10.