CVE-2026-80146 Lantronix Autonomous Out-of-Band Devices Stack-Based Buffer Overflow via mfc eeprom read
Authenticated attackers can execute arbitrary code on Lantronix out-of-band devices via a stack-based buffer overflow in the mfc eeprom read command.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-80146?
CVE-2026-80146 is a critical memory corruption vulnerability in LANTRONIX EMG7500, published on 22 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-121
Which versions are affected by CVE-2026-80146?
How do I fix CVE-2026-80146?
No fix has been published for CVE-2026-80146 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-80146 being exploited?
There is no known exploitation of CVE-2026-80146 in the wild and no public exploit code.
Sources
Also known as GHSA-88xg-5qpc-c627.