CVE-2026-80144
Received Received - Intake

Authenticated Command Injection in Lantronix SLC8000, EMG8500, EMG7500, SLB882, and SLC Series

Publication date: 2026-09-22

Last updated on: 2026-09-22

Assigner: VulnCheck

Description
Lantronix SLC8000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a command injection vulnerability that allows authenticated attackers to execute arbitrary shell commands as root by exploiting an undocumented mfc eeprom write command that passes unsanitized user input to a system() call. Attackers can authenticate as any user to the terminal or CLI interface and inject malicious commands through the unsanitized parameter to achieve complete loss of confidentiality, integrity, and availability on the affected device and potentially impact downstream serial-attached devices.

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Meta Information

Published
2026-09-22
Last Modified
2026-09-22
Generated
2026-09-22
AI Q&A
2026-09-22
EPSS Evaluated
N/A
NVD
CVE-2026-80144
EUVD
EUVD-2026-84507

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
lantronix emg7500 to 9.7.0.1 (exc)
lantronix slc8000 to 9.7.0.2 (exc)
lantronix emg8500 to 9.7.0.1 (exc)
lantronix slb882 *
lantronix slcx-03 *
lantronix slcx-02 *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

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Executive Summary

This vulnerability is a command injection flaw in Lantronix devices including SLC8000, EMG8500, EMG7500, SLB882, SLCx-03, and SLCx-02. It allows authenticated attackers to execute arbitrary shell commands as root by using an undocumented mfc eeprom write command that passes unsanitized user input to a system() call.

Detection Guidance

Detecting this vulnerability requires checking the firmware versions of Lantronix devices. For SLC8000, verify if firmware is below v9.7.0.2. For EMG8500/EMG7500, check if firmware is below v9.7.0.1. All versions of SLB882 and SLCx-03/SLCx-02 are vulnerable. Use device management interfaces or CLI commands to check firmware versions.

Impact Analysis

Attackers can gain complete control over the affected device, leading to loss of confidentiality, integrity, and availability. This could allow unauthorized access to sensitive data, manipulation of device settings, and potential impact on downstream serial-attached devices.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, which may violate compliance requirements such as GDPR and HIPAA. Organizations using affected Lantronix devices may face legal and regulatory penalties due to compromised data security.

Mitigation Strategies

Immediately update affected devices to the latest firmware versions: SLC8000 to v9.7.0.2 or later, EMG8500/EMG7500 to v9.7.0.1 or later. Isolate vulnerable devices from critical networks to limit potential impact. Disable unnecessary services and restrict access to device interfaces.

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