NetEase Cloud Music 3.1.38/3.1.39.205426 cloudmusic.exe certificate validation

Summaryinfo

A vulnerability described as problematic has been identified in NetEase Cloud Music 3.1.38/3.1.39.205426. This issue affects some unknown processing of the file cloudmusic.exe. Such manipulation leads to certificate validation. This vulnerability is uniquely identified as CVE-2026-109423. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in NetEase Cloud Music 3.1.38/3.1.39.205426. It has been rated as problematic. Affected by this issue is an unknown code block of the file cloudmusic.exe. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is integrity. CVE summarizes:

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.

The advisory is shared for download at gist.github.com. This vulnerability is handled as CVE-2026-109423 since 10/12/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/12/2026). The MITRE ATT&CK project declares the attack technique as T1587.003.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Cloud Software

Vendor

• NetEase

Name

• Cloud Music

Version

• 3.1.38
• 3.1.39.205426

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