CVE-2026-90704
Received Received - Intake

Command Injection in D-Link DWR-M921 Router

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: VulDB

Description
A vulnerability was found in D-Link DWR-M921 1.1.52. The impacted element is the function system of the file /boafrm/formDiskPartition. Performing a manipulation of the argument devicename results in command injection. Remote exploitation of the attack is possible. The exploit has been made public and could be used.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-90704
EUVD
EUVD-2026-77354

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
d-link dwr-m921 1.1.52

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Attack-Flow Graph

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Executive Summary

This vulnerability is a command injection flaw in the D-Link DWR-M921 router firmware version 1.1.52. It exists in the /boafrm/formDiskPartition endpoint where user-controlled input in the devicename parameter is directly inserted into shell commands without proper sanitization. Attackers can exploit this by sending crafted HTTP requests to execute arbitrary commands as the root user.

Detection Guidance

Check if your D-Link DWR-M921 router is running firmware version V1.1.52. Send a crafted HTTP POST request to the /boafrm/formDiskPartition endpoint with a manipulated devicename parameter to test for command injection. Use network scanning tools to identify vulnerable devices by checking for open ports and firmware versions.

Impact Analysis

An attacker could gain full control over the router, execute arbitrary commands, modify system files, or destroy data. Since the router is a network device, compromise could lead to network breaches, interception of traffic, or pivoting to other systems on the local network.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating confidentiality requirements in GDPR and HIPAA. Compromised routers may expose protected health information or personal data, resulting in regulatory penalties, loss of trust, and legal consequences.

Mitigation Strategies

Apply the latest firmware update from D-Link if available. Disable remote access to the router's web interface if not required. Implement network segmentation to limit exposure. Monitor network traffic for suspicious activity targeting the /boafrm/formDiskPartition endpoint.

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