Zyxel NWA50AX PRO up to 7.10(ACGE.2) Configuration File file_upload-cgi path traversal

Summaryinfo

A vulnerability categorized as critical has been discovered in Zyxel NWA50AX PRO up to 7.10(ACGE.2). This impacts an unknown function of the file file_upload-cgi of the component Configuration File Handler. The manipulation results in path traversal. This vulnerability is known as CVE-2025-6265. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Zyxel NWA50AX PRO up to 7.10(ACGE.2). Affected is an unknown functionality of the file file_upload-cgi of the component Configuration File Handler. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A path traversal vulnerability in the file_upload-cgi CGI program of Zyxel NWA50AX PRO firmware version 7.10(ACGE.2) and earlier could allow an authenticated attacker with administrator privileges to access specific directories and delete files, such as the configuration file, on the affected device.

The advisory is shared for download at zyxel.com. This vulnerability is traded as CVE-2025-6265 since 06/19/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation requires an enhanced level of successful authentication. 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 07/15/2025). The MITRE ATT&CK project declares the attack technique as T1006.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21410). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Zyxel

Name

• NWA50AX PRO

Version

• 7.10(ACGE.2)

License

• commercial

Website

• Vendor: https://www.zyxel.com/

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Once again VulDB remains the best source for vulnerability data.

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