CVE-2026-41924
Deferred Deferred - Pending Action
OS Command Injection in WDR201A WiFi Extender

Publication date: 2026-05-04

Last updated on: 2026-05-04

Assigner: VulnCheck

Description
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the makeRequest.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the set_time or StartSniffer functions. Attackers can craft a POST request with specially crafted ampersand-delimited parameters to bypass input sanitization and execute commands with a maximum length of 31 bytes through the date command or channel parameter processing.
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Meta Information
Published
2026-05-04
Last Modified
2026-05-04
Generated
2026-06-16
AI Q&A
2026-05-05
EPSS Evaluated
2026-06-14
NVD
CVE-2026-41924
Affected Vendors & Products
Currently, no data is known.
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.
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Executive Summary

The vulnerability exists in the WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) within the makeRequest.cgi binary. It is an OS command injection flaw that allows unauthenticated remote attackers to execute arbitrary shell commands. This is possible by injecting malicious input into the set_time or StartSniffer functions through a specially crafted POST request. The attacker can bypass input sanitization by using ampersand-delimited parameters and execute commands up to 31 bytes in length.

Impact Analysis

This vulnerability can have severe impacts as it allows unauthenticated remote attackers to execute arbitrary shell commands on the affected device. This could lead to full compromise of the WiFi extender, unauthorized access to the network, data theft, disruption of network services, or use of the device as a foothold for further attacks within the network.

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