What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-16
• Weakness: CWE-321

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.

Affected products

• NetEase Cloud Music for Windows: 3.1.38, 3.1.39.205426

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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