Description (CNA)
All firmware versions of Lantronix SLC8000, SLC9000, EMG8500, EMG7500, SLB882, SLCx-03, and SLCx-02 contain an authentication bypass vulnerability in the web management portal that allows unauthenticated attackers to derive valid session tokens of logged-in users and bypass source IP and User-Agent validation. Session tokens are generated deterministically from the device model and the current time at one-second resolution, resulting in a small enumerable set of possible active tokens. Attackers can construct a crafted URI that exploits file extension handling in the web server path routing to bypass per-session source-address validation, then use a derived token from a different source address to gain elevated privileges on the affected device and potentially impact downstream serial-attached devices.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| LANTRONIX / SLC8000 | affected * |
| LANTRONIX / EMG8500 | affected * |
| LANTRONIX / EMG7500 | affected * |
| LANTRONIX / SLB882 | affected * |
| LANTRONIX / SLCx-03 | affected * |
| LANTRONIX / SLCx-02 | affected * |
| LANTRONIX / SLC9000 | affected * |
CWE
CWE-330
References
- https://revrb.net/2026/09/21/revrb-lantern.html
- https://www.vulncheck.com/advisories/lantronix-autonomous-out-of-band-devices-predictable-session-token-with-validation-bypass
ADP enrichment
No English description supplied.
No references supplied.