CVE-2026-2400 Schneider Electric CVE debrief

Who should care

Organizations using PowerChute Serial Shutdown, particularly those with exposed web administration interfaces or untrusted users with access to the system, should prioritize updating to version 1.5. Affected operators, platforms, and security teams need to review vulnerability management and implement necessary controls. This includes reviewing compensating controls for exposed systems while remediation is scheduled and verified, and checking relevant monitoring, detection, and logs for exposed assets that need extra review. Additionally, tracking exceptions, retesting remediated assets, and closing the item only after evidence is documented are crucial steps. The vulnerability management process should be updated to include regular checks for similar vulnerabilities in the future, and asset inventory should be reviewed to identify and address any existing vulnerabilities. Furthermore, implementing a robust monitoring system to detect potential exploitation attempts and having a rollback/change window plan in place can help mitigate the risk associated with this vulnerability. Lastly, ensuring that the security team is aware of the potential impacts and is involved in the remediation process is essential for a coordinated and effective response. Security teams should also consider the potential for similar vulnerabilities in other components and ensure that their overall security posture is robust enough to handle such threats. By taking these steps, organizations can significantly reduce the risk associated with CVE-2026-2400 and improve their overall security and compliance posture. Security teams should work closely with IT and operational teams to ensure that all necessary steps are taken to mitigate this vulnerability effectively. This includes providing clear guidance on the necessary updates, compensating controls, and monitoring requirements to ensure that all stakeholders are aware of their roles and responsibilities in addressing this vulnerability. Effective communication and coordination between teams are critical to ensuring a successful remediation process. By prioritizing this vulnerability and taking proactive steps to address it, organizations,

Technical summary

The CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability exists in PowerChute Serial Shutdown, which could cause application user credentials to reset when a Web Admin user alters the POST /setPCBEDesc request payload. The CVSS v4.0 Base Score is 5.3, Medium severity. Affected product context indicates that PowerChute Serial Shutdown is the impacted component. Defensive impact includes updating to version 1.5 and implementing compensating controls.

Defensive priority

Organizations using PowerChute Serial Shutdown should prioritize updating to version 1.5 to address the CWE-93 Improper Neutralization of CRLF Sequences vulnerability.

Recommended defensive actions

• Update PowerChute Serial Shutdown to version 1.5
• Implement compensating controls to monitor and restrict access to the affected system
• Conduct inventory checks to identify and address any existing vulnerabilities
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability exists in PowerChute Serial Shutdown, which could cause application user credentials to reset when a Web Admin user alters the POST /setPCBEDesc request payload. The CVSS v4.0 Base Score is 5.3, Medium severity. Evidence is limited to the official CVE record and source item. Defenders should verify affected product deployments, review official guidance, and implement compensating controls.

Official resources