SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

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…

HIGH 8.2EPSS 0.29%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 4.0
8.2 HIGHCVSS: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/M
EPSS
0.29% probability · 22th percentile
CISA KEV
Not listed
Weakness
CWE-1188
Affected
schneider-electric/ecostruxure panel server pas400 firmware · schneider-electric/ecostruxure panel server pas600 firmware · schneider-electric/ecostruxure panel server pas600v2 firmware · schneider-electric/ecostruxure panel server pas800 firmware · schneider-electric/ecostruxure panel server pas800v2 firmware
Source
cybersecurity@se.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.