Input Parameter Validation Flaw in ADM by Asustor

CVE-2026-24936

What is CVE-2026-24936?

CVE-2026-24936 is a vulnerability identified in the ADM (Asustor Data Master) operating system, which is utilized in Asustor NAS (Network Attached Storage) devices. This operating system is designed to provide users with comprehensive data management and storage capabilities. The vulnerability arises due to improper validation of input parameters within a specific CGI program when a user attempts to join an Active Directory (AD) domain. An unauthenticated remote attacker can exploit this flaw, enabling them to write arbitrary data to any file on the system. This capability allows attackers to potentially overwrite critical system files, leading to complete system compromise, which can significantly disrupt operations and jeopardize sensitive information.

Potential Impact of CVE-2026-24936

1. System Compromise: The vulnerability allows unauthorized attackers to overwrite critical system files, which can lead to full control of the affected NAS devices and potentially expose sensitive data stored on them.

2. Data Integrity and Availability Risks: By enabling remote attackers to alter system files, organizations may face threats to data integrity and availability, leading to loss of critical data and potential downtime for services relying on the affected NAS.

3. Increased Attack Surface: With the possibility of exploitation, the attack surface for organizations using vulnerable Asustor products expands significantly, potentially attracting further malicious activity and increasing the likelihood of future incidents.

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