D-Link DNS-340L 1.01B04 Add-On Center addon_center.cgi f_name/f_url/f_flag/f_login_user os command injection

Summaryinfo

A vulnerability identified as very critical has been detected in D-Link DNS-340L 1.01B04. Affected by this issue is some unknown functionality of the file /cgi-bin/addon_center.cgi of the component Add-On Center. Performing a manipulation of the argument f_name/f_url/f_flag/f_login_user results in os command injection. This vulnerability is identified as CVE-2026-85222. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as very critical has been found in D-Link DNS-340L 1.01B04. This affects some unknown functionality of the file /cgi-bin/addon_center.cgi of the component Add-On Center. The manipulation of the argument f_name/f_url/f_flag/f_login_user with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-85222. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. Technical details and a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/03/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

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

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• D-Link

Name

• DNS-340L

Version

• 1.01B04

License

• commercial

Website

• Vendor: https://www.dlink.com/

CPE 2.3info

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CPE 2.2info

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Submitinfo

Accepted

• Submit #894212: D-Link DNS-340L ShareCenter confirmed DNS-340L firmware builds OS Command Injection (by ST4R0001)

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