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.
Published: 2026-09-22
Score: 9.4 Critical
EPSS: n/a
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

The vulnerability is a command injection flaw in an undocumented mfc eeprom write command that passes unsanitized user input to a system() call. An authenticated attacker with access to the terminal or CLI interface can supply crafted input that is executed with root privileges. This results in complete loss of confidentiality, integrity, and availability on the affected device and may affect devices connected downstream via serial interfaces.

Affected Systems

LANTRONIX routers and devices including EMG7500, EMG8500, SLB882, SLC8000, SLCx-02, and SLCx-03. Firmware versions before v9.7.0.2 on SLC8000, before v9.7.0.1 on the EMG series, and all versions of SLB882, SLCx-02, and SLCx-03 are impacted.

Risk and Exploitability

The CVSS score of 9.4 indicates a critical severity. The EPSS score is not reported, and this issue is not listed in CISA's KEV catalog. Attackers must first authenticate to the device using the CLI or terminal interface; the vulnerability is exercised through the machine's command shell. Once authenticated, the attacker can inject any shell command, leading to full system compromise.

Generated by OpenCVE AI on September 22, 2026 at 16:27 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the firmware of affected devices to the latest available versions (SLC8000 to v9.7.0.2, EMG7500/EMG8500 to v9.7.0.1, and all SLB882, SLCx-02, SLCx-03 to the most recent releases).
  • If an immediate firmware upgrade is not feasible, restrict the device’s CLI access to trusted administrative accounts only and apply network segmentation to limit exposure of the affected devices.
  • As a temporary control, consider disabling or blocking the mfc eeprom write command through device configuration or firewall rules to prevent the injection vector.

Generated by OpenCVE AI on September 22, 2026 at 16:27 UTC.

Tracking

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Advisories

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History

Tue, 22 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
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.
Title Lantronix Autonomous Out-of-Band Devices CLI Command Injection via mfc eeprom write
Weaknesses CWE-78
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-22T15:43:55.512Z

Reserved: 2026-08-25T20:43:54.261Z

Link: CVE-2026-80144

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-22T16:17:59.303

Modified: 2026-09-22T16:17:59.303

Link: CVE-2026-80144

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-22T16:30:12Z

Weaknesses
  • CWE-78

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')