PT-2026-2004 · Watchyourlan · Watchyourlan

Xnand · Published 2026-01-09 · Updated 2026-01-23 · CVE-2026-0774

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions WatchYourLAN (affected versions not specified)

Description A network-adjacent attacker can execute arbitrary code on affected installations of WatchYourLAN without authentication. The issue stems from insufficient validation of user-supplied input for the arpstrs parameter before it is used in a system call, leading to argument injection. Successful exploitation allows an attacker to execute code with the privileges of the service account.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Argument Injection

Weakness Enumeration

CWE-88

Related Identifiers

CVE-2026-0774

ZDI-26-039

Affected Products

Watchyourlan

References · 4

• https://zerodayinitiative.com/advisories/ZDI-26-039 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-0774 · Security Note
• https://twitter.com/CveFindCom/status/2014558695191916549 · Twitter Post
• https://twitter.com/CVEnew/status/2014576948392165687 · Twitter Post