CVE-2026-6866

HIGHCVSS 8.2/10EPSS 0.29%

Last modified

CVE-2026-6866 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. 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.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS 4.0
8.2/10

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

EPSS Probability
0.29%

20.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Schneider-ElectricEcostruxure Panel Server Pas400 Firmware< 002.006.000
Schneider-ElectricEcostruxure Panel Server Pas600 Firmware< 002.006.000
Schneider-ElectricEcostruxure Panel Server Pas600v2 Firmware< 002.006.000
Schneider-ElectricEcostruxure Panel Server Pas800 Firmware< 002.006.000
Schneider-ElectricEcostruxure Panel Server Pas800v2 Firmware< 002.006.000

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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 authentication using known credentials.
How severe is CVE-2026-6866?
CVE-2026-6866 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.
How do I fix CVE-2026-6866?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-6866?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST