CVE-2025-56365

HIGH

Matter SDK < 1.4.0 - Denial of Service via Reachable Assertion in Command Processing for Nonexistent Endpoint

Title source: llm

Description

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).

References (3)

Core 3

Core References

https://github.com/project-chip/connectedhomeip/issues/37184

https://github.com/project-chip/connectedhomeip/pull/37207

https://github.com/project-chip/connectedhomeip/

Scores

CVSS v3 7.5

EPSS 0.0036

EPSS Percentile 28.9%

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 (1)

csa-iot/matter < 1.4.0.0

Published Jul 14, 2026

Tracked Since Jul 15, 2026