CVE-2026-6866Network attack vector

Sensitive-data access via reverted initial credentials

Published May 12, 2026 · Updated May 12, 2026

Insecure defaults in Schneider Electric EcoStruxure Panel Server 002.005.000 and earlier allow remote attackers to read sensitive information. The credential initialization path can restore initial credentials in rare circumstances instead of preserving configured values. No privileges or user interaction are required after reversion; known initial credentials then permit unauthorized authentication and sensitive-data access.

CVSS severity8.2
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure defaults in Schneider Electric EcoStruxure Panel Server 002.005.000 and earlier allow remote attackers to read sensitive information. The credential initialization path can restore initial credentials in rare circumstances instead of preserving configured values. No privileges or user interaction are required after reversion; known initial credentials then permit unauthorized authentication and sensitive-data access.

The record

CVE
CVE-2026-6866
Published
May 12, 2026
Updated
May 12, 2026
Vendor
Distributed Data Systems
Product
EcoStruxure Panel Server
Classifications
CWE-1188, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 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=Versions 002.005.000 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Distributed Data Systems · EcoStruxure Panel Serverversion=Versions 002.005.000 and prior

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.2Schneider Electric SECVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1188Initialization of a Resource with an Insecure Default
T1078.001Valid Accounts: Default Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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