Vulnerability in Csa-Iot Matter
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (20.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.003 · change: -0.003
Affected products
- Csa-Iot Matter — versions 1.3.0.0, 1.4.0.0
Weakness classification (CWE)
References
- github.com/project-chip/connectedhomeip/issues/38619 (Exploit, Issue Tracking)
- github.com/project-chip/connectedhomeip/ (Product)
Frequently asked questions
- What is CVE-2025-56361?
- CVE-2025-56361 is a medium-severity vulnerability in Csa-Iot Matter, classified under Reachable Assertion. CVSS score: 5.7/10. Published 2026-07-14.
- How severe is CVE-2025-56361?
- Medium severity. CVSS v3 base score is 5.7 out of 10.