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

Quick assessment

Affected
Socomec DIRIS A-40
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Socomec socomec DIRIS A-40是法国溯高美索克曼（Socomec）公司的一款用于功率计量监控的电气设备。 Socomec DIRIS A-40存在访问控制错误漏洞，该漏洞源于Web API实现缺乏身份验证，可能导致网络邻近的攻击者绕过身份验证。

AI Predicted 9.1 Difficulty: Trivial EPSS 0.39% · P32

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-2491

Vulnerability Information
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Vulnerability Title
Socomec DIRIS A-40 HTTP API Authentication Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Socomec socomec DIRIS A-40 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Socomec socomec DIRIS A-40是法国溯高美索克曼（Socomec）公司的一款用于功率计量监控的电气设备。 Socomec DIRIS A-40存在访问控制错误漏洞，该漏洞源于Web API实现缺乏身份验证，可能导致网络邻近的攻击者绕过身份验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Socomec DIRIS A-40 1.8.1 -

II. Public POCs for CVE-2026-2491

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III. Intelligence Information for CVE-2026-2491

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Vendor Advisories for CVE-2026-2491 (1)

Vendor Pages for CVE-2026-2491 (1)

IV. Related Vulnerabilities

Same vendor: Socomec
Same weakness: CWE-306

V. Comments for CVE-2026-2491

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