CVE-2026-80149
Received Received - Intake

Server-Side Request Forgery in Lantronix SLC8000 EMG8500 EMG7500 SLB882

Publication date: 2026-09-22

Last updated on: 2026-09-22

Assigner: VulnCheck

Description
Lantronix SLC8000 before firmware v9.7.0.3, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882 contain a server-side request forgery vulnerability in the WebSSH/WebTelnet listener that allows unauthenticated attackers to cause the affected device to establish SSH connections to attacker-controlled endpoints. The custom shellinaboxd uses the rooturl parameter from the web connection to determine its own IP address; by modifying this parameter an attacker redirects the SSH terminal connection to an arbitrary host or IP. Attackers can use this capability to enumerate or communicate with internal network endpoints that would otherwise be inaccessible.

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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-2026-80149
EUVD
EUVD-2026-84515

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
lantronix emg7500 to 9.7.0.1 (exc)
lantronix slc8000 to 9.7.0.3 (exc)
lantronix emg8500 to 9.7.0.1 (exc)
lantronix slb882 *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

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Executive Summary

This vulnerability is a server-side request forgery (SSRF) in Lantronix devices including SLC8000, EMG8500, EMG7500, and SLB882. It allows unauthenticated attackers to manipulate the rooturl parameter in WebSSH/WebTelnet connections to redirect SSH terminal sessions to attacker-controlled endpoints. The custom shellinaboxd service uses this parameter to determine its own IP address, enabling attackers to redirect connections to arbitrary hosts or IPs.

Detection Guidance

To detect this vulnerability, check if your Lantronix device is running an affected firmware version. For SLC8000, verify if firmware is below v9.7.0.3. For EMG8500/EMG7500, check if firmware is below v9.7.0.1. All versions of SLB882 are vulnerable. Inspect network traffic for unexpected SSH connections initiated by the device.

Impact Analysis

This vulnerability allows attackers to bypass network boundaries and access internal network endpoints that should be restricted. They can enumerate or communicate with internal systems, potentially leading to data exfiltration, lateral movement within the network, or further exploitation of internal services. Unpatched devices are exposed to remote attacks without authentication.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating confidentiality requirements in GDPR and HIPAA. Organizations may face compliance violations if attackers exfiltrate personal or health data due to insufficient network segmentation. It highlights the need for timely patching and network access controls to maintain regulatory compliance.

Mitigation Strategies

Immediately update affected Lantronix devices to the latest firmware versions. For SLC8000, upgrade to v9.7.0.3 or later. For EMG8500/EMG7500, upgrade to v9.7.0.1 or later. Disable WebSSH/WebTelnet listeners if not required. Restrict network access to these services to trusted sources only.

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