---
id: CVE-2026-109424
title: >-
  NetEase Cloud Music client for Windows (cloudmusic.exe) versions 3.1.38 and
  3.1.39.205426 contains a weak encryption vulnerability where /eapi/ and
  /xeapi/ API response bodies are decrypted using a fixed, publicly documented
  AES-128-ECB …
summary: >-
  NetEase Cloud Music client for Windows (cloudmusic.exe) versions 3.1.38 and
  3.1.39.205426 contains a weak encryption vulnerability where /eapi/ and
  /xeapi/ API response bodies are decrypted using a fixed, publicly documented
  AES-128-ECB …
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-321
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T20:17:09.143'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109424'
references:
  - url: 'https://gist.github.com/LeoWSY-hashblue/10e5383fc2d4d75faf74a9507c6bba9f'
    label: disclosure@vulncheck.com
  - url: 'https://hr.163.com/product.html/music'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/netease-cloud-music-weak-encryption-via-eapi-xeapi
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T21:04:28.919Z'
---

## Overview

NetEase Cloud Music client for Windows (cloudmusic.exe) versions 3.1.38 and 3.1.39.205426 contains a weak encryption vulnerability where /eapi/ and /xeapi/ API response bodies are decrypted using a fixed, publicly documented AES-128-ECB key with no integrity credential. Attackers who can intercept or originate server responses can construct valid ciphertext under the known key with PKCS#7 padding, enabling the client to accept forged API responses that serve as a prerequisite for further exploitation such as reaching the os.navigateExternal bridge.

## Remediation

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