CVE-2025-56361

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.

• CWE-617

• https://github.com/project-chip/connectedhomeip/Product
• https://github.com/project-chip/connectedhomeip/issues/38619Exploit, Issue Tracking
• https://github.com/project-chip/connectedhomeip/issues/38619Exploit, Issue Tracking

Published

Jul 14, 2026

Last Modified

Jul 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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