CVE-2026-71956
Received Received - Intake

Command Injection in D-Link DWR-M961 Router

Publication date: 2026-08-08

Last updated on: 2026-08-08

Assigner: VulnCheck

Description
D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a command injection vulnerability in the app.cgi interface. A remote attacker can inject arbitrary malicious commands into the netDig.ping.dst field, resulting in command execution with root privileges.

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Meta Information

Published
2026-08-08
Last Modified
2026-08-08
Generated
2026-08-08
AI Q&A
2026-08-08
EPSS Evaluated
N/A
NVD
CVE-2026-71956
EUVD
EUVD-2026-54808

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
d-link dwr-m961 1.1.2_c1_202602110044
d-link dwr-m961 to 1.1.5_C1_202607071108 (exc)
d-link dwr-m961 1.1.5_C1_202607071108

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.

Attack-Flow Graph

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Executive Summary

CVE-2026-71956 is a command injection vulnerability in D-Link DWR-M961 routers with hardware version C1 and software version 1.1.2_C1_202602110044. It allows remote attackers to inject malicious commands via the app.cgi interface, specifically targeting the netDig.ping.dst field. This results in arbitrary command execution with root privileges.

Detection Guidance

To detect this vulnerability, scan your network for D-Link DWR-M961 devices with hardware version C1 and software versions prior to 1.1.5_C1_202607071108. Check if the device's web interface (app.cgi) is accessible and test the netDig.ping.dst field for command injection by sending crafted inputs.

Impact Analysis

This vulnerability allows attackers to execute arbitrary commands on your router with the highest privileges. This could lead to full device compromise, unauthorized access to your network, data theft, or turning your router into a botnet node. Attackers can bypass security measures and gain control over your internet traffic and connected devices.

Compliance Impact

This vulnerability allows remote attackers to execute arbitrary commands with root privileges on affected D-Link DWR-M961 devices. Such unauthorized access could lead to data breaches, unauthorized data access, or manipulation, which directly conflicts with compliance requirements under GDPR (data protection) and HIPAA (healthcare data security). Organizations using these devices may fail to meet regulatory obligations due to the lack of proper access controls and vulnerability management.

Mitigation Strategies

Immediately update the device firmware to version 1.1.5_C1_202607071108 or later. If an update is unavailable, isolate the device from the internet or untrusted networks to prevent exploitation. Disable remote access to the web interface if not required.

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