CVE-2025-26858: diris m-70 Input Validation Flaw — Fix

Description

A buffer overflow vulnerability exists in the Modbus TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted set of network packets can lead to denial of service. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability.

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CVSS v3.1 Score

8.6

HIGH

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

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
socomec	diris_m-70_firmware	All
socomec	diris_m-70	All

References

Advisories & Patches

https://talosintelligence.com/vulnerability_reports/TALOS-2025-2152 https://www.socomec.fr/sites/default/files/2025-10/CVE-2025-26858---Diris-Digiware-Mxx-Dxx-_VULNERABILITIES_2025-10-01-16-38-44_English_0.pdf https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2152

Frequently Asked Questions

What is CVE-2025-26858? +

A buffer overflow vulnerability exists in the Modbus TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted set of network packets can lead to denial of service. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability. It has a CVSS v3.1 base score of 8.6 (HIGH).

How severe is CVE-2025-26858? +

CVE-2025-26858 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-26858? +

CVE-2025-26858 affects products from socomec, specifically: diris_m-70, diris_m-70_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-26858? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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