Description
A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted PPPoE configuration on an affected device when the cloud management mode is enabled.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zyxel | ATP series firmware | 5.10 through 5.36 Patch 2 | — |
| Zyxel | USG FLEX series firmware | 5.00 through 5.36 Patch 2 | — |
| Zyxel | USG FLEX 50(W) series firmware | 5.10 through 5.36 Patch 2 | — |
| Zyxel | USG20(W)-VPN series firmware | 5.10 through 5.36 Patch 2 | — |
| Zyxel | VPN series firmware | 5.00 through 5.36 Patch 2 | — |
Advisories 1
- WID-SEC-2023-1765 Zyxel Firewall: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 17, 2023