Vulnerability · Published Jan 23, 2026 · Assigned by zdi

CVE-2026-0774WatchYourLAN Configuration Page Argument Injection Remote Code Execution Vulnerability

High 8.8

In plain English

A high-severity argument injection in WatchYourLAN from WatchYourLAN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 3.0)8.8High

Exploit odds (30 days)0.8%top 42.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
WatchYourLAN	WatchYourLAN	2.1.2

Weakness: CWE-88 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ZDI-26-039 x_research-advisory