{"id":"CVE-2026-109423","revision":"56c4b7de96e04660a41287feecc8f82c","records":[{"revision":"56c4b7de96e04660a41287feecc8f82c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-109423","aliases":[],"title":"NetEase Cloud Music TLS Certificate Validation Bypass","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.","state":0,"publishedAt":"2026-10-12T19:34:31.77+00:00","modifiedAt":"2026-10-15T13:42:28.896+00:00","affected":[{"ecosystem":"Vendor product","name":"NetEase Cloud Music for Windows","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"vendor\": \"NetEase\",\n                    \"product\": \"NetEase Cloud Music for Windows\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.1.38\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.1.39.205426\",\n                            \"versionType\": \"custom\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":9.1,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.4,"severity":"HIGH"}],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109423","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109423","identifiers":["CVE-2026-109423"]},"retained":false,"historicalAffected":[]}],"coverage":[]}