CVE-2026-24934
Unknown Unknown - Not Provided
Insecure DDNS HTTP/SSL Validation Enables MitM Attack in ADM

Publication date: 2026-02-03

Last updated on: 2026-02-19

Assigner: ASUSTOR, Inc.

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.
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Meta Information
Published
2026-02-03
Last Modified
2026-02-19
Generated
2026-06-16
AI Q&A
2026-02-03
EPSS Evaluated
2026-06-14
NVD
CVE-2026-24934
EUVD
EUVD-2026-5285
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
asustor data_master From 4.1.0.rhu2 (inc) to 4.3.3.rof1 (inc)
asustor data_master From 5.0.0.ra82 (inc) to 5.1.2.re51 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-295 The product does not validate, or incorrectly validates, a certificate.
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Executive Summary

This vulnerability occurs because the DDNS function uses an insecure HTTP connection or does not properly validate the SSL/TLS certificate when querying an external server for the device's WAN IP address. This allows an unauthenticated remote attacker to perform a Man-in-the-Middle (MitM) attack and spoof the response, causing the device to update its DDNS record with an incorrect IP address.

Impact Analysis

The vulnerability can lead to the device updating its DDNS record with an incorrect IP address due to a spoofed response from a Man-in-the-Middle attack. This can disrupt network services relying on accurate DDNS records, potentially causing loss of connectivity or redirecting traffic to malicious locations.

Compliance Impact

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