---
id: CVE-2026-81644
title: |-
  DoS vulnerability in the preview service module.
  Impact: Successful exploitation of this vulnerability may affect availability.
summary: |-
  DoS vulnerability in the preview service module.
  Impact: Successful exploitation of this vulnerability may affect availability.
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'
cwe:
  - CWE-264
vendor: Huawei
product: HarmonyOS
affected:
  - HarmonyOS 6.1.0
published: '2026-09-09'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:17:04.927'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81644'
references:
  - url: 'https://consumer.huawei.com/en/support/bulletin/2026/9/'
    label: psirt@huawei.com
  - url: 'https://consumer.huawei.com/en/support/bulletinlaptops/2026/9/'
    label: psirt@huawei.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-09T15:55:27.198529Z'
ingestedAt: '2026-09-14T12:42:46.876Z'
epss: 0.00233
epssPercentile: 0.12733
---

## Overview

DoS vulnerability in the preview service module.
Impact: Successful exploitation of this vulnerability may affect availability.

## Remediation

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