Medium severity · published Feb 3, 2026
CVE-2026-24932
An improper certificate validation vulnerability was found in ADM while updating the DDNS settings.
5.9
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
ADM · ASUSTOR
4.1.0 through 4.3.3.ROF1; 5.0.0 through 5.1.1.RCI1 · source: vendor
DM
Data Master · Asustor
4.1.0.rhu2 through 4.3.3.rof1; 5.0.0.ra82 before 5.1.2.re51 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24932
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-24932
Vendor Advisory
https://www.asustor.com/security/security_advisory_detail?id=50
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