---
id: CVE-2025-56362
title: >-
  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
summary: >-
  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
  wri…
severity: medium
cvss: 5.7
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-617
vendor: csa-iot
product: matter
affected:
  - matter = 1.3.0.0
  - matter = 1.4.0.0
published: '2026-07-14'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T19:38:18.010'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-56362'
references:
  - url: 'https://github.com/project-chip/connectedhomeip/'
    label: cve@mitre.org
  - url: 'https://github.com/project-chip/connectedhomeip/issues/38618'
    label: cve@mitre.org
  - url: 'https://github.com/project-chip/connectedhomeip/issues/38618'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00581
epssPercentile: 0.45862
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-05T17:46:06.918797Z'
ingestedAt: '2026-10-05T18:29:11.170Z'
---

## Overview

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).

## Affected

- `matter = 1.3.0.0`
- `matter = 1.4.0.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.