Review reviewHigh

CVE-2026-6866

Schneider Electric EcoStruxure™ Panel Server, ecostruxure panel server pas400 firmware, ecostruxure panel server pas400

CWE-1188 Initialization of a Resource with an Insecure Default vulnerability exists that could cause unauthorized disclosure of sensitive information when credentials revert to initial settings in rare circumstances, enabling unauthorized authentication using known credentials.

CVSS: 8.2
EPSS: 0.29%
CISA KEV: Not listed
Published: 2026.05.13

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.29%

Technical severityCVSS 8.2

Vulnerability overview

Affected product and versions

Product: Schneider Electric EcoStruxure™ Panel Server, ecostruxure panel server pas400 firmware, ecostruxure panel server pas400
Affected versions: Versions 002.005.000 and prior, < 002.006.000
Fixed versions: 002.006.000

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Schneider Electric EcoStruxure™ Panel Server, ecostruxure panel server pas400 firmware, ecostruxure panel server pas400 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE: CWE-1188