CVE-2025-56365

MEDIUM
5.7
CVSS Score
Published: July 14, 2026 at 12:00 AM UTC
Updated: October 13, 2026 at 09:10 AM UTC
2 products affected across 2 vendorsMatterMatter (Project CHIP) connectedhomeip

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.3%
SSVC
PoC

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.4.0.0
Affected range stops below 1.4.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMCISA-ADP
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-617

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