EcoStruxure™ Panel Server: Initialization of a Resource with an Insecure Default
CVE-2026-6866 is a high-severity initialization of a resource with an insecure default vulnerability in EcoStruxure™ Panel Server from Schneider Electric, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected EcoStruxure™ Panel Server versions: Versions 002.005.000 and prior. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.29% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Ecostruxure Panel Server Pas400 Firmware to 002.006.000 or a later version.
- Update Ecostruxure Panel Server Pas600 Firmware to 002.006.000 or a later version.
- Update Ecostruxure Panel Server Pas600v2 Firmware to 002.006.000 or a later version.
- Read the advisory on download.schneider-electric.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Schneider Electric | EcoStruxure™ Panel Server | Versions 002.005.000 and prior | Not stated |
| Schneider Electric | Ecostruxure Panel Server Pas400 Firmware | before 002.006.000 | 002.006.000 |
| Schneider Electric | Ecostruxure Panel Server Pas600 Firmware | before 002.006.000 | 002.006.000 |
| Schneider Electric | Ecostruxure Panel Server Pas600v2 Firmware | before 002.006.000 | 002.006.000 |
| Schneider Electric | Ecostruxure Panel Server Pas800 Firmware | before 002.006.000 | 002.006.000 |
| Schneider Electric | Ecostruxure Panel Server Pas800v2 Firmware | before 002.006.000 | 002.006.000 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.2 | High | CNA (se.com) |
| CVSS 3.1 | 7.5 | High | NVD |
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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Initialization of a Resource with an Insecure Default
The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.
More Initialization of a Resource with an Insecure Default vulnerabilities (CWE-1188)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Recent Initialization of a Resource with an Insecure Default vulnerabilities
- 9.1 Critical severity
- 7.7 High severity
- 9.8 Critical severity
- 9.6 Critical severity
- 7.2 High severity
- 9.8 Critical severity
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