---
title: "CVE-2026-80156: Lantronix SLC8000 - Path Traversal & Remote Code Execution"
description: "Lantronix SLC8000 < 9.7.0.5, EMG8500/EMG7500 < 9.7.0.1, and all versions of SLB882/SLCx-03/SLCx-02 contain a path traversal vulnerability in the web management portal upload endpoint, letting authenticated attackers write arbitrary data outside intended directories, leading to remote code execution."
url: https://panop.io/threat-heartbeat/CVE-2026-80156/
---

# CVE-2026-80156 Lantronix SLC8000 - Path Traversal & Remote Code Execution

Lantronix SLC8000 < 9.7.0.5, EMG8500/EMG7500 < 9.7.0.1, and all versions of SLB882/SLCx-03/SLCx-02 contain a path traversal vulnerability in the web management portal upload endpoint, letting authenticated attackers write arbitrary data outside intended directories, leading to remote code execution.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.70% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-80156)

## Details

Type

Path Traversal

Impact

Remote Code Execution, File System Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Published

22 September 2026

Updated

15 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Update to firmware version 9.7.0.5 or later for SLC8000, 9.7.0.1 or later for EMG8500/EMG7500, or latest available firmware for other affected models.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-80156](https://nvd.nist.gov/vuln/detail/CVE-2026-80156)
- [https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-arbitrary-file-write-via-upload-filename-validation-bypass](https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-arbitrary-file-write-via-upload-filename-validation-bypass)
- [https://ts.lantronix.com/ftp/SLC9000/9.7.0.2R1/](https://ts.lantronix.com/ftp/SLC9000/9.7.0.2R1/)
- [https://revrb.net/2026/09/21/revrb-lantern.html](https://revrb.net/2026/09/21/revrb-lantern.html)
- [https://ts.lantronix.com/ftp/emg/EMG\_7500/9.7.0.1R2/](https://ts.lantronix.com/ftp/emg/EMG_7500/9.7.0.1R2/)
- [https://ts.lantronix.com/ftp/emg/EMG\_8500/9.7.0.1R2/](https://ts.lantronix.com/ftp/emg/EMG_8500/9.7.0.1R2/)
- [https://ts.lantronix.com/ftp/slc8000/9.7.0.5R2/](https://ts.lantronix.com/ftp/slc8000/9.7.0.5R2/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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