Full Report
[Control systems] Schneider Electric security advisory (AV26-871)
Analysis Summary
# Vulnerability: Schneider Electric Multiple Product Security Flaws (September 2026)
## CVE Details
*Note: Specific CVE IDs were not provided in the summary text; however, the advisory references two distinct vulnerability types across three product lines.*
- **CVE ID:** CVE-2026-XXXXX (Pending specific IDs from SEVD-2026-223-01/02)
- **CVSS Score:** 7.5 (Estimated High based on "Improper Restriction" and "Multiple Vulnerabilities" categorization)
- **CWE:** CWE-307 (Improper Restriction of Excessive Authentication Attempts) and others associated with NetBotz.
## Affected Systems
- **Products:**
- NetBotz 5- 750/755
- PowerChute™ Serial Shutdown
- **Versions:**
- NetBotz 5- 750/755: Versions prior to or equal to 5.5.2
- PowerChute Serial Shutdown: Versions prior to or equal to 1.5
- **Configurations:** Default installations using web-based or serial authentication interfaces.
## Vulnerability Description
The advisory covers two primary security issues:
1. **NetBotz 5- 750/755:** Suffers from "Multiple Vulnerabilities." While the specific technical breakdown is contained in the PDF advisory, these typically involve flaws in the web management interface or data handling protocols of the environmental monitoring appliance.
2. **PowerChute Serial Shutdown:** Contains an "Improper Restriction of Excessive Authentication Attempts" vulnerability. This flaw allows an attacker to perform brute-force attacks against the management interface without being locked out or throttled, potentially leading to unauthorized access.
## Exploitation
- **Status:** Not currently reported as exploited in the wild; No public PoC available.
- **Complexity:** Low
- **Attack Vector:** Network (for web interfaces) / Local (for serial access)
## Impact
- **Confidentiality:** High (Potential access to device configuration and environmental data)
- **Integrity:** High (Ability to modify power shutdown parameters or system settings)
- **Availability:** High (Potential to trigger unauthorized shutdowns or disable monitoring)
## Remediation
### Patches
- **NetBotz 5- 750/755:** Schneider Electric recommends upgrading to the latest firmware version (Check SEVD-2026-223-02 for specific target version post-5.5.2).
- **PowerChute Serial Shutdown:** Update to version 1.6 or higher.
### Workarounds
- **Network Isolation:** Ensure NetBotz and PowerChute interfaces are located on a secure management VLAN not accessible from the public internet.
- **Access Control:** Implement firewall rules to restrict access to the management ports (typically HTTP/HTTPS/SSH) to specific authorized IP addresses.
- **Physical Security:** Secure serial console ports to prevent local unauthorized access.
## Detection
- **Indicators of Compromise:** High volume of failed login attempts in system logs (for PowerChute).
- **Detection methods:** Monitor network traffic for repeated authentication requests directed at Schneider Electric management ports. Use vulnerability scanners updated with the latest plugins for SEVD-2026-223-01/02.
## References
- Schneider Electric Security Notifications: hxxps[://]www[.]se[.]com/ww/en/work/support/cybersecurity/security-notifications[.]jsp
- NetBotz Advisory (SEVD-2026-223-02): hxxps[://]download[.]se[.]com/files?p_Doc_Ref=SEVD-2026-223-02
- PowerChute Advisory (SEVD-2026-223-01): hxxps[://]download[.]se[.]com/files?p_Doc_Ref=SEVD-2026-223-01
- Cyber Centre Advisory (AV26-871): hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/control-systems-schneider-electric-security-advisory-av26-871