Low severity · published Feb 3, 2026
CVE-2026-24934
An improper certificate validation vulnerability was found in ADM while querying an external server for the device's WAN IP address.
3.7
CVSS
0.2%
EPSS
No
On KEV
Description
The DDNS function uses an insecure HTTP connection or fails to validate the SSL/TLS certificate when querying an external server for the device's WAN IP address. An unauthenticated remote attacker can perform a Man-in-the-Middle (MitM) attack to spoof the response, leading the device to update its DDNS record with an incorrect IP address.
Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.1.RCI1.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% 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-2026-24934
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-24934
Vendor Advisory
https://www.asustor.com/security/security_advisory_detail?id=50
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