CVE-2026-2491

Unauthenticated configuration access via unprotected HTTP APIs

Published Mar 13, 2026 · Updated Mar 13, 2026

Authentication bypass in Socomec DIRIS A-40 1.8.1 allows remote attackers to read and modify device configuration through WebView APIs. WebView applies authentication only in the client and accepts unauthenticated requests to every exposed backend API, including APIs that return stored credentials. Exploitation requires adjacent-network access to TCP port 80 and an enabled WebView server; successful requests expose and permit changes to device configuration.

CVSS severity6.3
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Socomec DIRIS A-40 1.8.1 allows remote attackers to read and modify device configuration through WebView APIs. WebView applies authentication only in the client and accepts unauthenticated requests to every exposed backend API, including APIs that return stored credentials. Exploitation requires adjacent-network access to TCP port 80 and an enabled WebView server; successful requests expose and permit changes to device configuration.

The record

CVE
CVE-2026-2491
Published
Mar 13, 2026
Updated
Mar 13, 2026
Vendor
Socomec
Product
DIRIS A-40
Classifications
CWE-306, T0866
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.8.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Socomec · DIRIS A-40version=1.8.1

Published CVSS scores

6.3Zero Day InitiativeCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T0866Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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