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.
History

Fri, 31 Jul 2026 11:30:00 +0000

Type Values Removed Values Added
Title Matter SDK Assertion in Level Control Cluster Leads to Device Denial of Service

Tue, 28 Jul 2026 09:30:00 +0000

Type Values Removed Values Added
Title Reachable Assertion in Matter SDK Level Control Cluster Causes Device Crash via Conflicting Pump Command

Sat, 25 Jul 2026 15:45:00 +0000

Type Values Removed Values Added
Title Reachable Assertion in Matter SDK Level Control Cluster Causes Device Crash via Conflicting Pump Command

Thu, 23 Jul 2026 04:00:00 +0000

Type Values Removed Values Added
Title Denial of Service via Assertion in Matter SDK Level Control Cluster

Fri, 17 Jul 2026 07:30:00 +0000

Type Values Removed Values Added
Title Denial of Service via Assertion in Matter SDK Level Control Cluster

Wed, 15 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-617
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 14 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
Description 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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-07-14T00:00:00.000Z

Updated: 2026-07-15T14:27:15.683Z

Reserved: 2025-08-16T00:00:00.000Z

Link: CVE-2025-56361

cve-icon Vulnrichment

Updated: 2026-07-15T14:27:04.173Z

cve-icon NVD

No data.

cve-icon Redhat

No data.