What is CVE-2026-6866?

CVE-2026-6866 is a high-severity vulnerability in Schneider Electric Ecostruxure™ Panel Server, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.5/10. Published 2026-05-12.

How severe is CVE-2026-6866?

High severity. CVSS v3 base score is 7.5 out of 10.

RCE in Schneider Electric Ecostruxure™ Panel Server

CVE-2026-6866

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…

EPSS: 0.003 (21.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

CWE-1188 — Initialization of a Resource with an Insecure Default

References

cybersecurity@se.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-6866?: CVE-2026-6866 is a high-severity vulnerability in Schneider Electric Ecostruxure™ Panel Server, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.5/10. Published 2026-05-12.
How severe is CVE-2026-6866?: High severity. CVSS v3 base score is 7.5 out of 10.