SSL/TLS Certificate Validation Flaw in Asustor ADM Servers
CVE-2026-24933

8.9HIGH

Key Information:

Vendor

Asustor

Status
Adm
Vendor
CVE Published:
3 February 2026

What is CVE-2026-24933?

An improper certificate validation vulnerability exists in Asustor's API communication component, which fails to validate SSL/TLS certificates when processing HTTPS requests. This flaw allows unauthenticated remote attackers to potentially execute Man-in-the-Middle attacks, intercepting cleartext communications. The exposed data may include sensitive information such as user account emails, MD5 hashed passwords, and device serial numbers, putting users' privacy and security at significant risk.

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Affected Version(s)

ADM Linux 4.1.0 <= 4.3.3.ROF1

ADM Linux 5.0.0 <= 5.1.1.RCI1

References

https://www.asustor.com/security/security_advisory_detail...
vendor-advisory

CVSS V4

Score:
8.9
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Nuke
JSON
.