D-Link DWR-M921 1.1.52 Boa Dispatch Table /boafrm/formsysCmd os command injection

Summaryinfo

A vulnerability was found in D-Link DWR-M921 1.1.52. It has been classified as critical. This impacts the function formsysCmd of the file /boafrm/formsysCmd of the component Boa Dispatch Table. The manipulation of the argument sysCmd leads to os command injection. This vulnerability is uniquely identified as CVE-2026-90705. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as critical, has been found in D-Link DWR-M921 1.1.52. This issue affects the function formsysCmd of the file /boafrm/formsysCmd of the component Boa Dispatch Table. The manipulation of the argument sysCmd with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at gist.github.com. The identification of this vulnerability is CVE-2026-90705. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are required for exploitation. Technical details as well as a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/13/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The exploit is available at gist.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.

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Productinfo

Vendor

• D-Link

Name

• DWR-M921

Version

• 1.1.52

License

• commercial

Website

• Vendor: https://www.dlink.com/

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CPE 2.2info

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Submitinfo

Accepted

• Submit #917697: D-Link Router D-Link DWR-M921 V1.1.52 Command Injection (by H3rmesk1t)

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