Hardcoded encryption key

CVE-2024-50377

Summary

A CWE-798 “Use of Hard-coded Credentials” was discovered affecting the following devices manufactured by Advantech: EKI-6333AC-2G (<= 1.6.3), EKI-6333AC-2GD (<= v1.6.3) and EKI-6333AC-1GPO (<= v1.2.1). The vulnerability is associated to the backup configuration functionality that by default encrypts the archives using a static password.

Impact

The hardcoded secret can be used craft a malicious backup configuration later restored inside the access point.

Issue Date

November 26, 2025

Affects

The following products and firmware versions are affected: EKI-6333AC-2G ≤ v1.6.3 EKI-6333AC-2GD ≤ v1.6.3 EKI-6333AC-1GPO ≤ v1.2.1

CVE Name

CVE-2024-50377

CVSS Details

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS Score

6.5

Solution

Update affected products to the following firmware versions released by Advantech: - EKI-6333AC-2G: v1.6.5 - EKI-6333AC-2GD: v1.6.5 - EKI-6333AC-1GPO: v1.2.2

Mitigations

Acknowledgements

Diego Zaffaroni of Nozomi Networks

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Research Projects

TRITON

TRITON is the first known cyberattack that directly interacted with a Safety Instrumented System (SIS). Labs reverse engineered the TriStation suite of software and delivered a report and two free tools for security researchers. This research was presented at Black Hat USA 2018.

GreyEnergy

The Labs team reverse engineered the GreyEnergy malicious document (maldoc) that leads to the installation of the malware (backdoor) on a victim’s network. Project outcomes include a report, multiple blogs and two free tools for security researchers.

IEC 62351

IEC Working Group 15 (WG15) is developing technology standards for secure-by-design power systems. Labs contributes to the standards and has demonstrated how they can be used to identify hard-to-detect cyberattacks. Research from this effort was presented at Black Hat USA 2019.

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