CVE-2026-24935
Unknown Unknown - Not Provided
SSL/TLS Validation Bypass in ADM NAT Module Enables MitM Attack

Publication date: 2026-02-03

Last updated on: 2026-02-19

Assigner: ASUSTOR, Inc.

Description
A third-party NAT traversal module fails to validate SSL/TLS certificates when connecting to the signaling server. While subsequent access to device services requires additional authentication, a Man-in-the-Middle (MitM) attacker can intercept or redirect the NAT tunnel establishment. This could allow an attacker to disrupt service availability or facilitate further targeted attacks by acting as a proxy between the user and the device services. 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
2026-06-15
NVD
CVE-2026-24935
EUVD
EUVD-2026-5286
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 involves a third-party NAT traversal module that does not properly validate SSL/TLS certificates when connecting to the signaling server. As a result, a Man-in-the-Middle (MitM) attacker can intercept or redirect the NAT tunnel establishment process. Although further authentication is required to access device services, the attacker could disrupt service availability or act as a proxy to facilitate additional targeted attacks between the user and the device services.

Impact Analysis

The vulnerability can allow an attacker to intercept or redirect the NAT tunnel establishment, potentially disrupting service availability. Additionally, by acting as a proxy between the user and device services, the attacker could facilitate further targeted attacks, compromising the security and reliability of the affected device services.

Compliance Impact

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