Description
The cross-site scripting (XSS) vulnerability in Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker with administrator privileges to store malicious scripts in a vulnerable device. A successful XSS attack could then result in the stored malicious scripts being executed when the user visits the Logs page of the GUI on the device.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zyxel | ATP series firmware | 4.32 through 5.35 | — |
| Zyxel | USG FLEX series firmware | 4.50 through 5.35 | — |
| Zyxel | USG FLEX 50(W) firmware | 4.16 through 5.35 | — |
| Zyxel | USG20(W)-VPN firmware | 4.16 through 5.35 | — |
| Zyxel | VPN series firmware | 4.30 through 5.35 | — |
Advisories 1
- WID-SEC-2023-1070 Zyxel Firewalls: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 1, 2023