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TI-2026-71266 Aliases CVE-2026-109424GHSA-h7w7-mfj4-5gxw

Weak encryption in NetEase Cloud Music for Windows API responses

Priority LOW 35CWE-321Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-321.

Summary

NetEase Cloud Music for Windows (cloudmusic.exe) versions 3.1.38 and 3.1.39.205426 decrypt /eapi/ and /xeapi/ API response bodies with a fixed, publicly documented AES-128-ECB key. The client does not verify response integrity, because the key is hard-coded and responses carry no integrity credential (CWE-321). An attacker who can intercept or originate server responses can build valid ciphertext under that key, so the client accepts forged API responses. Forged responses are a prerequisite for further exploitation, such as reaching the os.navigateExternal bridge.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00156 4th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NetEaseNetEase Cloud Music for Windows3.1.38; 3.1.39.205426—No fix listedCNA
  • NetEase Cloud Music for Windows VendorNetEase Affected 3.1.38; 3.1.39.205426 Fixed in — No fix listed CNA

Remediation

No fixed version is listed for NetEase Cloud Music for Windows.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109424
  2. 2026-10-13 Alias added: GHSA-h7w7-mfj4-5gxw
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-13 CISA SSVC decision points changed

References

Other 2

  • TI-2025-28828 An issue in NetEase (Hangzhou) Network Co., Ltd NeacSafe64 Driver before v1.0.0.8 allows… CVSS 3.1MEDIUM 6.5
  • TI-2020-06141 OS command injection in pomelo-monitor CVSS 3.1CRITICAL 9.8
  • TI-2012-01209 Unspecified vulnerability in the NetEase WeiboHD (com.netease.wbhd) application 1.0.0 for… CVSS 2.0HIGH 10.0
  • TI-2012-01208 Unspecified vulnerability in the NetEase Pmail (com.netease.rpmms) application 0.5.0 and… CVSS 2.0HIGH 10.0
  • TI-2012-01207 Unspecified vulnerability in the NetEase Reader (com.netease.pris) application 1.1.2 and… CVSS 2.0HIGH 10.0
  • TI-2012-01206 Unspecified vulnerability in the Youdao Dictionary (com.youdao.dict) application 1.6.1… CVSS 2.0HIGH 10.0
See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences