CVE-2025-56362

HIGH

Matter SDK < 1.4.2 - Unauthenticated Denial of Service via Level Control Cluster Assertion Failure

Title source: llm

Description

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).

References (2)

Core 2

Core References

https://github.com/project-chip/connectedhomeip/issues/38618

https://github.com/project-chip/connectedhomeip/

Scores

CVSS v3 7.5

EPSS 0.0034

EPSS Percentile 26.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-617

Status published

Products (2)

csa-iot/matter 1.3.0.0

csa-iot/matter 1.4.0.0

Published Jul 14, 2026

Tracked Since Jul 15, 2026