CVE-2025-56361
HIGHMatter SDK (connectedhomeip) 1.3-1.4 - Unauthenticated Denial of Service via Level Control Cluster Invariant Assertion
Title source: llmDescription
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 (2)
Core 2
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