Wavlink WL-NU516U1-A M16U1_V240425 POST Parameter /cgi-bin/wireless.cgi sub_401D68 SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 command injection

Summaryinfo

A vulnerability was found in Wavlink WL-NU516U1-A M16U1_V240425 and classified as critical. The impacted element is the function sub_401D68 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. Such manipulation of the argument SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 leads to command injection. This vulnerability is documented as CVE-2026-13538. The attack can be executed remotely. Additionally, an exploit exists. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Wavlink WL-NU516U1-A M16U1_V240425. Affected by this issue is the function sub_401D68 of the file /cgi-bin/wireless.cgi of the component POST Parameter Handler. The manipulation of the argument SSID2G2/SSID5G2/AuthMethod2/WPAPSK12 with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-13538. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

The exploit is available at github.com. It is declared as proof-of-concept. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Upgrading eliminates this vulnerability. The upgrade is hosted for download at dl.wavlink.com.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Wavlink

Name

• WL-NU516U1-A

Version

• M16U1_V240425

License

• commercial

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Exploitinginfo

Threat Intelligenceinfo

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Submitinfo

Accepted

• Submit #834019: Wavlink WL-NU516U1-A M16U1_V240425 Command Injection (by HustBinary)

Duplicate

• Submit #XXXXXX: Xxxxxxx Xx-xxxxxxx-x Xxxxx_xxxxxxx Xxxxxxx Xxxxxxxxx (by JuneGu)
• Submit #XXXXXX: Xxxxxxx Xx-xxxxxxx-x Xxxxx_xxxxxxx Xxxxxxx Xxxxxxxxx (by JuneGu)
• Submit #XXXXXX: Xxxxxxx Xx-xxxxxxx-x Xxxxx_xxxxxxx Xxxxxxx Xxxxxxxxx (by JuneGu)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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