---
id: CVE-2025-55222
title: >-
  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
summary: >-
  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 …
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'
cwe:
  - CWE-306
vendor: socomec
product: diris_m-70_firmware
affected:
  - diris_m-70_firmware = 1.6.9
published: '2025-12-01'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T00:10:00.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-55222'
references:
  - url: 'https://talosintelligence.com/vulnerability_reports/TALOS-2025-2251'
    label: talos-cna@cisco.com
tags:
  - nvd
epss: 0.00419
epssPercentile: 0.33543
ingestedAt: '2026-09-26T00:22:39.985Z'
---

## Overview

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 RTU over TCP on port 503.

## Affected

- `diris_m-70_firmware = 1.6.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.