CVE-2026-24932: The DDNS update function in ADM fails to properly validate the hostname of the DDNS server's TLS/SSL certificate. Although the connection uses HTTPS, an…

PriorityP433medium5.9CVSS 3.1

AVNACHPRNUINSUCHINAN

EPSS

0.21%

10.7th percentile

The DDNS update function in ADM fails to properly validate the hostname of the DDNS server's TLS/SSL certificate. Although the connection uses HTTPS, an improper validated TLS/SSL certificates allows a remote attacker can intercept the communication to perform a Man-in-the-Middle (MitM) attack, which may obtain the sensitive information of DDNS updating process, including the user's account email, MD5 hashed password, and device serial number.This issue affects ADM: from 4.1.0 through 4.3.3.ROF1, from 5.0.0 through 5.1.1.RCI1.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
asustor	adm	4.1.0 – 4.3.3.ROF1	—
asustor	adm	5.0.0 – 5.1.1.RCI1	—
asustor	data_master	4.1.0.rhu2 – 4.3.3.rof1	—
asustor	data_master	>= 5.0.0.ra82 < 5.1.2.re51	5.1.2.re51

CVSS provenance

nvdv3.15.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

nvdv4.08.9HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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