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Vulnerability record · public intelligence
CVE-2026-80147
CRITICAL

Lantronix Autonomous Out-of-Band Devices Stack-Based Buffer Overflow via mfc eeprom write

Published Sep 22, 2026 · Updated Nov 3, 2026

Severity · CVSSCRITICAL · Not scored
Known exploitationNot listed
EPSS / likelihood0.46%
QFinch risk scoreNot available

Original summary

Normalized public record · Updated Nov 3, 2026

Lantronix Autonomous Out-of-Band Devices Stack-Based Buffer Overflow via mfc eeprom write

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

Lantronix SLC8000/SLC9000 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 stack-based buffer overflow vulnerability that allows authenticated attackers to potentially execute arbitrary code by exploiting an undocumented mfc eeprom write command that copies unbounded user input into a bounded stack buffer before passing it to a system() call. Attackers can authenticate as any user to the terminal or CLI interface and supply an oversized input to trigger the overflow, potentially achieving complete loss of confidentiality, integrity, and availability on the affected device and impacting downstream serial-attached devices.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

FIRST-EPSSCVE-LIST-V5
SSVC priority
MEDIUM
Confidence
Not available
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. Researcher Disclosure ↗
  2. SLC8000 Firmware ↗
  3. EMG8500 Firmware ↗
  4. EMG7500 Firmware ↗
  5. SLC9000 Firmware ↗
  6. www.vulncheck.com ↗

Record history

Published Sep 22, 2026 · Last refreshed Nov 3, 2026

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