CVE-2025-56361

HIGH

Matter SDK (connectedhomeip) 1.3-1.4 - Unauthenticated Denial of Service via Level Control Cluster Invariant Assertion

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 7.5
EPSS 0.0041
EPSS Percentile 33.7%
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