CVE-2025-56361 Project CHIP CVE debrief

Who should care

Users of Matter SDK versions 1.3 and 1.4, operators of affected systems, and security teams should be aware of this vulnerability and apply patches to prevent potential denial of service attacks. Affected product deployments should be identified and owners assigned for follow-up.

Technical summary

The vulnerability is caused by a reachable assertion in the Level Control cluster's server tick logic within the Matter SDK (connectedhomeip) 1.3 thru 1.4. When a MoveToLevel command is executed and followed by a conflicting write to the OperationMode attribute (in the Pump Configuration and Control cluster), an invariant check (`minLevel < currentLevel`) fails, causing the device to abort. This leads to a denial of service condition. The issue is confirmed in SDK versions 1.3 and 1.4 (commit ab3d5ae), and is triggered remotely without authentication. Users should apply patches to prevent potential denial of service attacks. Affected product deployments should be identified, and owners assigned for follow-up. Defenders should verify affected product deployments, review official advisories, and plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Defensive priority

High priority should be given to patching affected Matter SDK versions to prevent potential denial of service attacks.

Recommended defensive actions

• Apply patches for Matter SDK versions 1.3 and 1.4
• Inventory and update affected systems
• Monitor for potential denial of service attacks
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The issue is confirmed in Matter SDK versions 1.3 and 1.4. Users should apply patches to prevent potential denial of service attacks. Evidence is limited to the CVE record and NVD detail. Defenders should verify affected product deployments and review official advisories.

Official resources