CVE-2026-0774
Unknown Unknown - Not Provided
Remote Code Execution via Argument Injection in WatchYourLAN

Publication date: 2026-01-23

Last updated on: 2026-01-23

Assigner: Zero Day Initiative

Description
WatchYourLAN Configuration Page Argument Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of WatchYourLAN. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the arpstrs parameter. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26708.
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Meta Information
Published
2026-01-23
Last Modified
2026-01-23
Generated
2026-06-16
AI Q&A
2026-01-23
EPSS Evaluated
2026-06-14
NVD
CVE-2026-0774
EUVD
EUVD-2026-4474
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
watchyourlan watchyourlan *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-88 The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.
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Executive Summary

CVE-2026-0774 is a remote code execution vulnerability in WatchYourLAN's configuration page. It occurs because the software does not properly validate the 'arpstrs' parameter before using it in a system call. This allows an attacker who is network-adjacent to execute arbitrary code on the affected system without needing to authenticate, running with the privileges of the service account. [1]

Impact Analysis

This vulnerability can have a severe impact as it allows an attacker to execute arbitrary code remotely without authentication. This can lead to full compromise of the affected system, including unauthorized access, data theft, data modification, or disruption of service, since the attacker gains the same privileges as the service account running WatchYourLAN. [1]

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