CVE-2025-56362

A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.2, specifically within the Level Control cluster's periodic server tick logic. When a MoveToLevel command is sent and immediately followed by a write of OperationMode=2 (in the Pump Configuration and Control cluster), the server tick function violates the assertion `currentLevel < maxLevel`, resulting in a crash. This can be exploited remotely without authentication to cause denial of service. Affected versions include 1.3 and 1.4 (commit ab3d5ae).

• CWE-617

• https://github.com/project-chip/connectedhomeip/Product
• https://github.com/project-chip/connectedhomeip/issues/38618Exploit, Issue Tracking
• https://github.com/project-chip/connectedhomeip/issues/38618Exploit, Issue Tracking

Published

Jul 14, 2026

Last Modified

Jul 17, 2026

Status

Analyzed

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