CVE-2025-13052: Asustor Data Master

Medium severity, CVSS 5.9. EPSS: 0.2% chance of exploitation in the next 30 days.

When the user set the Notification's sender to send emails to the SMTP server via msmtp, an improper validated TLS/SSL certificates allows an attacker who can intercept network traffic between the SMTP client and server to execute a man-in-the-middle (MITM) attack, which may obtain the sensitive information of the SMTP. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RKD2 as well as from ADM 5.0.0 through ADM 5.1.0.RN42.

Affected products

• Asustor Data Master: from 4.1.0.RHU2, before 4.3.3.ROF1 (fixed in 4.3.3.ROF1); from 5.0.0.ra82, before 5.1.1.RCI1 (fixed in 5.1.1.RCI1)

Published 2025-12-12. Last modified 2026-10-07.