Vulnerability in Csa-Iot Matter
CVE-2025-56362
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).
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 (19.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.1% 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/38618 (Exploit, Issue Tracking)
- github.com/project-chip/connectedhomeip/ (Product)
Frequently asked questions
- What is CVE-2025-56362?
- CVE-2025-56362 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-2025-56362?
- Medium severity. CVSS v3 base score is 5.7 out of 10.