high7.5
CVE-2023-22915
A buffer overflow vulnerability in the “fbwifi_forward.cgi” CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware v…
Impact
A buffer overflow vulnerability in the “fbwifi_forward.cgi” CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.30 through 5.35, USG20(W)-VPN firmware versions 4.30 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote unauthenticated attacker to cause DoS conditions by sending a crafted HTTP request if the Facebook WiFi function were enabled on an affected device.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Zyxel | Usg Flex 100 Firmware | from 4.50 through 5.35 |
| Zyxel | Usg Flex 100w Firmware | from 4.50 through 5.35 |
| Zyxel | Usg Flex 200 Firmware | from 4.50 through 5.35 |
| Zyxel | Usg Flex 50 Firmware | from 4.50 through 5.35 |
| Zyxel | Usg Flex 50w Firmware | from 4.30 through 5.35 |
| Zyxel | Usg Flex 500 Firmware | from 4.50 through 5.35 |
| Zyxel | Usg Flex 700 Firmware | from 4.50 through 5.35 |
| Zyxel | Vpn100 Firmware | from 4.50 through 5.35 |
| Zyxel | Vpn1000 Firmware | from 4.50 through 5.35 |
| Zyxel | Vpn300 Firmware | from 4.50 through 5.35 |
| Zyxel | Vpn50 Firmware | from 4.50 through 5.35 |
| Zyxel | Usg 20w-Vpn Firmware | from 4.30 through 5.35 |