Description
An out-of-bounds write vulnerability exists in some of the Ethernet switches because of improper validation of the username field length during Web login processing. This may allow a remote attacker to submit a specially crafted overly long input, triggering a buffer overflow that can cause the authentication process to crash and result in a Denial of Service (DoS) attack.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Moxa | TN-4500B Series | 1.0 – ≤ 2.0 | 2.1 |
Advisories 1
- WID-SEC-2026-3455 Moxa Ethernet Switch (TN-4500B): Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 20, 2026