{"id":"CVE-2026-109423","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-109423","summary":"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…","details":"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.","published":"2026-10-12T20:17:08.993","modified":"2026-10-12T20:17:08.993","cvss":{"score":7.4,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://gist.github.com/LeoWSY-hashblue/10e5383fc2d4d75faf74a9507c6bba9f"},{"type":"WEB","url":"https://hr.163.com/product.html/music"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/netease-cloud-music-tls-certificate-validation-bypass"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-12T20:17:08.993"}}