D-Link DWR-M961 up to 1.1.5_C1_202607071107 formL2tpv3ConfigSetup tunnelid/sessionid command injection

Summaryinfo

A vulnerability was found in D-Link DWR-M961 up to 1.1.5_C1_202607071107 and classified as very critical. This affects an unknown part of the file /boafrm/formL2tpv3ConfigSetup of the component formL2tpv3ConfigSetup. Executing a manipulation of the argument tunnelid/sessionid can lead to command injection. This vulnerability is tracked as CVE-2026-71954. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in D-Link DWR-M961 up to 1.1.5_C1_202607071107 and classified as very critical. This vulnerability affects an unknown code of the file /boafrm/formL2tpv3ConfigSetup of the component formL2tpv3ConfigSetup. The manipulation of the argument tunnelid/sessionid with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

D-Link DWR-M961 devices with hardware version C1 and firmware version before 1.1.5_C1_202607071108 contain a command injection vulnerability in the /boafrm/formL2tpv3ConfigSetup interface. A remote attacker can inject arbitrary malicious commands into the tunnelid and sessionid fields, resulting in command execution with root privileges.

The advisory is available at supportannouncement.us.dlink.com. This vulnerability was named CVE-2026-71954 since 08/08/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/08/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

Upgrading to version 1.1.5_C1_202607071108 eliminates this vulnerability.

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

Productinfo

Vendor

• D-Link

Name

• DWR-M961

Version

• 1.1.5_C1_202607071107

License

• commercial

Website

• Vendor: https://www.dlink.com/

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

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