What’s Vulnerable › Vulnerabilities

CVE-2026-109423: NetEase Cloud Music TLS Certificate Validation Bypass

• Severity: high (CVSS 7.4 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-295

Description

NetEase Cloud Music client for Windows (cloudmusic.exe) versions 3.1.38 and 3.1.39.205426 contains a TLS certificate validation vulnerability that allows a network-adjacent attacker to intercept and decrypt HTTPS traffic by failing to validate the server certificate chain, verify the hostname, or consult any Windows certificate trust store. Attackers can perform a man-in-the-middle attack using a rogue certificate authority to decrypt traffic, capture the MUSIC_U session credential sent in authenticated API requests, and modify server responses in transit, enabling account takeover and transport-layer response forgery.

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-tls-certificate-validation-bypass

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