Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

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

High 7.4

In plain English

A high-severity improper certificate validation in NetEase Cloud Music for Windows from NetEase. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 3.1)7.4High

Exploit odds (30 days)0.2%top 95.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
NetEase	NetEase Cloud Music for Windows	3.1.383.1.39.205426

Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Researcher Disclosure technical-description
Product Page product
VulnCheck Advisory: NetEase Cloud Music TLS Certificate Validation Bypass third-party-advisory