---
id: CVE-2025-66324
title: "Input verification vulnerability in the compression and decompression module.\_Impact: Successful exploitation of this vulnerability may affect app data integrity."
summary: "Input verification vulnerability in the compression and decompression module.\_Impact: Successful exploitation of this vulnerability may affect app data integrity."
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-269
vendor: huawei
product: harmonyos
affected:
  - harmonyos = 5.0.1
  - harmonyos = 5.1.0
published: '2025-12-08'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T20:10:01.970'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66324'
references:
  - url: 'https://consumer.huawei.com/en/support/bulletin/2025/12/'
    label: psirt@huawei.com
tags:
  - nvd
epss: 0.00088
epssPercentile: 0.00348
ingestedAt: '2026-10-07T20:46:46.753Z'
---

## Overview

Input verification vulnerability in the compression and decompression module. Impact: Successful exploitation of this vulnerability may affect app data integrity.

## Affected

- `harmonyos = 5.0.1`
- `harmonyos = 5.1.0`

## Remediation

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