CVE-2026-73173: CWE-306 Missing Authentication for Critical Function in Advantech EKI-1242IEIMS
Nozomi Networks Labs identified a CWE-306: Missing Authentication for Critical Function vulnerability in the edgserver management protocol of Advantech EKI-1242EIMS in firmware version V1.06.01 that allows a remote unauthenticated attacker to invoke critical device-management functions, including network reconfiguration, reboot, reset, and firmware upgrade, by sending crafted requests to TCP port 5058.
AI Analysis
Technical Summary
This vulnerability (CWE-306) affects the Advantech EKI-1242IEIMS device running firmware version V1.06.01 and earlier. The edgserver management protocol does not enforce authentication for critical functions, enabling remote attackers to send crafted requests to TCP port 5058 and invoke device-management commands without any credentials. This can lead to unauthorized network reconfiguration, device reboot, reset, and firmware upgrades, potentially compromising device availability and integrity.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to take control of critical device-management functions, potentially disrupting network operations, causing denial of service through reboots or resets, or installing malicious firmware. This poses a significant risk to the availability and security of the affected device and the network it supports.
Mitigation Recommendations
No official patch or remediation is currently documented. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to TCP port 5058 on the affected devices to trusted management networks only to reduce exposure.
CVE-2026-73173: CWE-306 Missing Authentication for Critical Function in Advantech EKI-1242IEIMS
Description
Nozomi Networks Labs identified a CWE-306: Missing Authentication for Critical Function vulnerability in the edgserver management protocol of Advantech EKI-1242EIMS in firmware version V1.06.01 that allows a remote unauthenticated attacker to invoke critical device-management functions, including network reconfiguration, reboot, reset, and firmware upgrade, by sending crafted requests to TCP port 5058.
CVSS v4.0
Score 8.8high
Affected software
Advantech
EKI-1242IEIMS
Advantech
EKI-1242EIMS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-306) affects the Advantech EKI-1242IEIMS device running firmware version V1.06.01 and earlier. The edgserver management protocol does not enforce authentication for critical functions, enabling remote attackers to send crafted requests to TCP port 5058 and invoke device-management commands without any credentials. This can lead to unauthorized network reconfiguration, device reboot, reset, and firmware upgrades, potentially compromising device availability and integrity.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to take control of critical device-management functions, potentially disrupting network operations, causing denial of service through reboots or resets, or installing malicious firmware. This poses a significant risk to the availability and security of the affected device and the network it supports.
Mitigation Recommendations
No official patch or remediation is currently documented. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to TCP port 5058 on the affected devices to trusted management networks only to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Nozomi
- Date Reserved
- 2026-08-11T09:36:40.350Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aaa96d555bf5e2cf5a6bf0e
Added to database: 09/16/2026, 13:17:09 UTC
Last enriched: 09/16/2026, 13:31:38 UTC
Last updated: 09/17/2026, 00:39:25 UTC
Views: 9
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