Vulnerability · Published Mar 13, 2026 · Assigned by zdi

CVE-2026-2491Socomec DIRIS A-40 HTTP API Authentication Bypass Vulnerability

Medium 6.3

In plain English

A medium-severity missing authentication in DIRIS A-40 from Socomec. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).

Severity (CVSS 3.0)6.3Medium

Exploit odds (30 days)0.5%top 59.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Socomec	DIRIS A-40	1.8.1

Weakness: CWE-306 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

ZDI-26-129 x_research-advisory
vendor-provided URL vendor-advisory