---
title: "CVE-2026-80147: Lantronix SLC8000 - Buffer Overflow"
description: "Lantronix SLC8000 < 9.7.0.2, EMG8500/EMG7500 < 9.7.0.1, and all versions of SLB882/SLCx-03/SLCx-02 contain a stack-based buffer overflow caused by an undocumented mfc eeprom write command copying unbounded input into a stack buffer, letting authenticated attackers execute arbitrary code via terminal or CLI interface."
url: https://panop.io/threat-heartbeat/CVE-2026-80147/
---

# CVE-2026-80147 Lantronix SLC8000 - Buffer Overflow

Lantronix SLC8000 < 9.7.0.2, EMG8500/EMG7500 < 9.7.0.1, and all versions of SLB882/SLCx-03/SLCx-02 contain a stack-based buffer overflow caused by an undocumented mfc eeprom write command copying unbounded input into a stack buffer, letting authenticated attackers execute arbitrary code via terminal or CLI interface.

CVSS base score 9.9 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.46% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-80147)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution

CVSS vector

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

Published

22 September 2026

Updated

15 October 2026

Weakness

[CWE-121](https://cwe.mitre.org/data/definitions/121.html)

## Vendor fix

Update to firmware version 9.7.0.2 or later for SLC8000, 9.7.0.1 or later for EMG8500/EMG7500, or latest available firmware for other affected devices.

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-2026-80147](https://nvd.nist.gov/vuln/detail/CVE-2026-80147)
- [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/slc8000/9.7.0.2R1/](https://ts.lantronix.com/ftp/slc8000/9.7.0.2R1/)
- [https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-stack-based-buffer-overflow-via-mfc-eeprom-write](https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-stack-based-buffer-overflow-via-mfc-eeprom-write)
- [https://ts.lantronix.com/ftp/SLC9000/9.7.0.2R1/](https://ts.lantronix.com/ftp/SLC9000/9.7.0.2R1/)

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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

Panop answers these inside your environment, for this CVE and every other finding.

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