CVE-2026-109813
Received Received - Intake

Hard-Coded Cryptographic Key in Moxa Industrial Computing Products

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: Moxa Inc.

Description
A hard-coded cryptographic key vulnerability exists in the `/usr/bin/sysman` of some of Moxa's industrial computing products. An unauthenticated attacker with adjacent network access could exploit the exposed private key material to compromise the confidentiality and integrity of communications.

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Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-109813
EUVD
EUVD-2026-102594

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Moxa AIG-302 Series 1.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-321 The product uses a hard-coded, unchangeable cryptographic key.

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Executive Summary

This vulnerability involves a hard-coded cryptographic key in the /usr/bin/sysman component of some Moxa industrial computing products. An attacker with adjacent network access could exploit this exposed private key to compromise the confidentiality and integrity of communications.

Detection Guidance

To detect this vulnerability, inspect the /usr/bin/sysman binary for hard-coded cryptographic keys or certificates. Use commands like strings /usr/bin/sysman | grep -i 'private key' or openssl x509 -in /usr/bin/sysman -text -noout to check for embedded certificates. Monitor network traffic for unusual TLS handshakes or decryption attempts.

Impact Analysis

An unauthenticated attacker could intercept, decrypt, or alter communications, leading to unauthorized access to sensitive data or control of affected systems. This could result in data breaches, operational disruptions, or unauthorized system modifications.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR (data protection) and HIPAA (healthcare data security) due to unauthorized access to sensitive data. Organizations may face legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Immediately update or patch the affected Moxa industrial computing products to remove the hard-coded cryptographic key in /usr/bin/sysman. If no patch is available, isolate the systems from adjacent network access and discontinue use until a fix is applied.

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