Description
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 read 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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
LANTRONIX SLC8000
Default version status: unaffected
0 to < 9.7.0.2affected
LANTRONIX EMG8500
Default version status: unaffected
0 to < 9.7.0.1affected
LANTRONIX EMG7500
Default version status: unaffected
0 to < 9.7.0.1affected
LANTRONIX SLB882
Default version status: unknown
*affected
LANTRONIX SLCx-03
Default version status: unknown
*affected
LANTRONIX SLCx-02
Default version status: unaffected
*affected
LANTRONIX SLC9000
Default version status: unaffected
0 to < 9.7.0.2affected
References
- https://revrb.net/2026/09/21/revrb-lantern.html ↗
- https://ts.lantronix.com/ftp/slc8000/9.7.0.2R1/ ↗
- https://ts.lantronix.com/ftp/emg/EMG_8500/9.7.0.1R2/ ↗
- https://ts.lantronix.com/ftp/emg/EMG_7500/9.7.0.1R2/ ↗
- https://ts.lantronix.com/ftp/SLC9000/9.7.0.2R1/ ↗
- https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-stack-based-buffer-overflow-via-mfc-eeprom-read ↗