Description
A null pointer dereference vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4.50 through V5.38, USG FLEX 50(W) series firmware versions from V5.20 through V5.38, and USG20(W)-VPN series firmware versions from V5.20 through V5.38 could allow an unauthenticated attacker to cause DoS conditions by sending crafted packets to a vulnerable device.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zyxel | ATP series firmware | versions V4.32 through V5.38 | — |
| Zyxel | USG FLEX series firmware | versions V4.50 through V5.38 | — |
| Zyxel | USG FLEX 50(W) series firmware | versions V5.20 through V5.38 | — |
| Zyxel | USG20(W)-VPN series firmware | versions V5.20 through V5.38 | — |
Advisories 2
- WID-SEC-2024-2031 Zyxel Firewall: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 20, 2024
- NCSC-2024-0357 Kwetsbaarheden verholpen in Zyxel Flex en USG Firewalls NCSC-NL (Netherlands) · Sep 3, 2024