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Vulnerability record · CVE-2025-55222 · published 1 December 2025

CVE-2025-55222: Socomec diris m-70 firmware missing authentication for critical function vulnerability

Socomec · Diris M 70 Firmware

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.

7.5 CVSS 3.1 High EPSS 0.42% · top 66.4% CWE-306 · Missing authentication for critical function
7.5CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
26 Sep 2026Last modified by NVD

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 RTU over TCP on port 503.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2024-53684Socomec diris m-70 firmware cross-site request forgery vulnerabilityA cross-site request forgery (csrf) vulnerability exists in the WEBVIEW-M functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted HTT…EPSS 0.24%7.5CVE-2025-54850Socomec diris m-70 firmware missing authentication for critical function vulnerabilityA denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially cr…EPSS 0.32%7.5CVE-2025-54851Socomec diris m-70 firmware missing authentication for critical function vulnerabilityA denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially cr…EPSS 0.43%7.5CVE-2025-55221Socomec diris m-70 firmware missing authentication for critical function vulnerabilityA 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…EPSS 0.42%7.5CVE-2025-23417Socomec diris m-70 firmware missing authentication for critical function vulnerabilityA denial of service vulnerability exists in the Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network p…EPSS 0.54%7.5CVE-2025-26858Socomec diris m-70 firmware improper input validation vulnerabilityA buffer overflow vulnerability exists in the Modbus TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted set of network packe…EPSS 0.65%7.5CVE-2024-48894Socomec diris m-70 firmware cleartext transmission vulnerabilityA cleartext transmission vulnerability exists in the WEBVIEW-M functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted HTTP request c…EPSS 1.1%7.5CVE-2024-48882Socomec diris m-70 firmware missing authentication for critical function vulnerabilityA denial of service vulnerability exists in the Modbus TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted network packet can…EPSS 0.54%

Source: NIST National Vulnerability Database (record CVE-2025-55222), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.