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CVE-2026-109424— NetEase Cloud Music Weak Encryption via eapi/xeapi

Quick assessment

Affected
NetEase NetEase Cloud Music for Windows
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

网易云音乐 Windows 客户端（cloudmusic.exe）3.1.38 和 3.1.39.205426 版本存在弱加密漏洞。该漏洞中，/eapi/ 和 /xeapi/ API 的响应体使用固定且公开记录的 AES-128-ECB 密钥进行解密，且未采用任何完整性校验机制。攻击者若能拦截或伪造服务器响应，可在已知密钥下构造带有 PKCS#7 填充的有效密文，从而诱导客户端接受伪造的 API 响应。这为后续利用（例如触发 os.navigateExternal 桥接调用）创造了前提条件。

CVSS 5.9 · Medium EPSS 0.16% · P4

Affected Version Matrix 2

VendorProduct Version RangeStatus
NetEase NetEase Cloud Music for Windows 3.1.38 affected
3.1.39.205426 affected
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I. Basic Information for CVE-2026-109424

Vulnerability Information
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Vulnerability Title
NetEase Cloud Music Weak Encryption via eapi/xeapi
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
NetEase NetEase Cloud Music for Windows 3.1.38 -

II. Public POCs for CVE-2026-109424

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III. Intelligence Information for CVE-2026-109424

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Vendor Advisories for CVE-2026-109424 (1)

Proof of Concept for CVE-2026-109424 (1)

Other References for CVE-2026-109424 (1)

Same Patch Batch · NetEase · 2026-10-12 · 3 CVEs total

CVE-2026-109422 8.1 HIGH NetEase Cloud Music RCE via os.navigateExternal IPC
CVE-2026-109423 7.4 HIGH NetEase Cloud Music TLS Certificate Validation Bypass

IV. Related Vulnerabilities

Same product: NetEase Cloud Music for Windows
Same vendor: NetEase
Same weakness: CWE-321

V. Comments for CVE-2026-109424

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