CVE-2025-56361: CSA-IoT Matter

Medium severity, CVSS 5.7. EPSS: 0.3% chance of exploitation in the next 30 days.

A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) 1.3 thru 1.4, specifically within the Level Control cluster's server tick logic (`emberAfLevelControlClusterServerTickCallback`). 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 and causes 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.

Affected products

• CSA-IoT Matter: version 1.3.0.0 only; version 1.4.0.0 only

Published 2026-07-14. Last modified 2026-10-05.