Wavlink AC3000 M33A8.V5030.210505 nas.cgi add_dir adddir_name path traversal

Summaryinfo

A vulnerability described as critical has been identified in Wavlink AC3000 M33A8.V5030.210505. This affects the function add_dir of the file nas.cgi. Such manipulation of the argument adddir_name leads to path traversal. This vulnerability is referenced as CVE-2024-39786. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Wavlink AC3000 M33A8.V5030.210505. It has been rated as critical. Affected by this issue is the function add_dir of the file nas.cgi. The manipulation of the argument adddir_name with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Multiple directory traversal vulnerabilities exist in the nas.cgi add_dir() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to permission bypass. An attacker can make an authenticated HTTP request to trigger these vulnerabilities.A directory traversal vulnerability exists within the `adddir_name` POST parameter.

The advisory is available at talosintelligence.com. This vulnerability is handled as CVE-2024-39786 since 06/28/2024. The exploitation is known to be easy. The attack may be launched remotely. The exploitation requires an enhanced level of successful authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/22/2025). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

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

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Productinfo

Vendor

• Wavlink

Name

• AC3000

Version

• M33A8.V5030.210505

License

• commercial

CPE 2.3info

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CPE 2.2info

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