CVE-2025-56365 Denial of service in n/a

Medium 5.7 Published 14 Jul 2026 Updated 5 Oct 2026

An attacker can crash Matter SDK devices by sending commands to nonexistent endpoints, causing a denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-56365?

CVE-2025-56365 is a medium-severity denial of service vulnerability in n/a, published on 14 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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).

Weakness: CWE-617

Which versions are affected by CVE-2025-56365?

It affects 1 product.

Products include Csa-Iot Matter.

How do I fix CVE-2025-56365?

No fix has been published for CVE-2025-56365 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-56365 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-56365 exists.

Sources

Also known as GHSA-wj9x-8hv5-2p36.