Is CVE-2026-6866 actively exploited?

No active exploitation of CVE-2026-6866 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6866 be exploited remotely?

Yes. CVE-2026-6866 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-6866?

CVE-2026-6866 has a CVSS score of 8.2 (HIGH).

HOME VULNERABILITIESCVE-2026-6866

HIGH

CVE-2026-6866

CWE-1188Published: May 12, 2026· Updated: May 12, 2026

8.2

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.4th

Official 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.

NVD Source

Technical Analysis

CVE-2026-6866 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

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

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

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News & Research Mentioning CVE-2026-6866

Schneider Electric EcoStruxure Panel Server

CISA Alerts· Jun 9, 2026

View CSAF Summary Schneider Electric is aware of its vulnerability in its EcoStruxure Panel Server offer. The EcoStruxure Panel Server is a high performance, modular gateway with enhanced cybersecurity that provides easy and fast connections to multiple concurrent edge control or cloud applications. Failure to apply the remediations provided below may risk unauthorized authentication, which could lead to access to sensitive information. The following versions of Schneider Electric EcoStruxure Panel Server are affected: EcoStruxure Panel Server PAS800 vers:intdot/<=002.005.000 EcoStruxure Panel Server PAS800 vers:intdot/=002.006.000 EcoStruxure Panel Server PAS800V2 vers:intdot/<=002.005.000 EcoStruxure Panel Server PAS800V2 vers:intdot/=002.006.000 E [xlite_meta score:73 src:CISA Alerts xlite_fp:f5790de22afcb9ce96214a47c9cb76c5828c422fb966d5fbce8b955acd7cac30]