CVE-2025-23417

High

Published: 01 December 2025

Published

01 December 2025

Modified

05 December 2025

KEV Added

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Patch

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CVSS Score 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Score 0.0006 19.6th percentile

Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-23417 is a high-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Socomec Diris M-70 Firmware. Its CVSS base score is 8.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 19.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SC-5 (Denial-of-service Protection) and SI-10 (Information Input Validation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Application or System Exploitation (T1499.004). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SC-5 Denial-of-service Protection good match

prevent

Directly implements denial-of-service protections to block specially crafted Modbus RTU over TCP packets from disrupting system availability.

SI-2 Flaw Remediation good match

prevent

Remediates the specific flaw in Modbus RTU over TCP functionality through timely patching as advised by the vendor.

SI-10 Information Input Validation good match

prevent

Validates information inputs from network packets to prevent specially crafted unauthenticated Modbus packets from triggering denial of service.

MITRE ATT&CK Enterprise TechniquesAI

T1499.004 Application or System Exploitation Impact

Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.

attack.mitre.org →

Why these techniques?

The vulnerability allows remote unauthenticated exploitation via a specially crafted packet to the Modbus RTU over TCP service, directly enabling endpoint denial of service through application exploitation.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

A 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 packet can lead to denial of service. An attacker can send an unauthenticated packet to trigger this…

vulnerability.

Deeper analysisAI

CVE-2025-23417 is a denial of service vulnerability in the Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 version 1.6.9. A specially crafted network packet can lead to a denial of service condition, as documented under CWE-306 (Missing Authentication for Critical Function). The vulnerability was published on 2025-12-01 and carries a CVSS v3.1 base score of 8.6 (AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H), indicating high severity primarily due to availability impact.

A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted packet to the affected device over the network. No privileges, user interaction, or special access are required, and the attack has low complexity. Successful exploitation results in a denial of service, with the changed scope (S:C) potentially amplifying the impact beyond the vulnerable component.

Mitigation details are available in the Cisco Talos Intelligence report at https://talosintelligence.com/vulnerability_reports/TALOS-2025-2139 and the vendor advisory from Socomec at https://www.socomec.fr/sites/default/files/2025-04/CVE-2025-23417---Diris-Digiware-Webview-_VULNERABILITIES_2025-04-11-17-16-19_English_0.pdf. Security practitioners should consult these resources for patching instructions and workarounds specific to the DIRIS Digiware M-70.