CVE-2026-2491

Medium

Description

Socomec DIRIS A-40 HTTP API Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Socomec DIRIS A-40 power monitoring devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web API implementation, which listens on TCP port 80 by default. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-23993.

SeverityMedium

CVSS6.3

Exploit probability—

ProductDIRIS A-40

PublishedMar 16, 2026

First seenMar 16, 2026

Weakness typeCWE-306Missing authentication for critical function

How to fix

Vendor advisories

emea.socomec.com/en/resource-center/resource-type/cyber-vulnerabilities-601

Affected products

Product	Affected versions	Fixed in
Socomec DIRIS A-40	1.8.1	—

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