Vulnerability in Csa-Iot Matter
CVE-2025-56365
A reachable assertion vulnerability exists in the Matter SDK (connectedhomeip) before 1.4.0, in the interaction model command processing logic. When an InvokeCommandRequest is sent to a nonexistent endpoint and cluster (e.g., 0x34), the code incorrectly treats the endpoint as valid due to missing checks in CodegenDataModelProvider::Invoke. This causes a VerifyOrDie failure in ProcessCommandDataIB and results in a crash (SIGABRT). The issue has been acknowledged and fixed in a later revision (PR #37207).
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 (19.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.9% 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
Weakness classification (CWE)
References
- github.com/project-chip/connectedhomeip/issues/37184 (Exploit, Issue Tracking)
- github.com/project-chip/connectedhomeip/pull/37207 (Patch)
- github.com/project-chip/connectedhomeip/ (Product)
Frequently asked questions
- What is CVE-2025-56365?
- CVE-2025-56365 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-2025-56365?
- Medium severity. CVSS v3 base score is 5.7 out of 10.