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.
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Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.
No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| zyxel | usg_flex_100_firmware | 4.50 - 5.35 | - |
| zyxel | usg_flex_100w_firmware | 4.50 - 5.35 | - |
| zyxel | usg_flex_200_firmware |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
12
Affected Products
2
References
zyxel / usg_flex_100_firmware
| 4.50 - 5.35 |
| - |
| zyxel | usg_flex_50_firmware | 4.50 - 5.35 | - |
| zyxel | usg_flex_50w_firmware | 4.30 - 5.35 | - |
| zyxel | usg_flex_500_firmware | 4.50 - 5.35 | - |
| zyxel | usg_flex_700_firmware | 4.50 - 5.35 | - |
| zyxel | vpn100_firmware | 4.50 - 5.35 | - |
| zyxel | vpn1000_firmware | 4.50 - 5.35 | - |
| zyxel | vpn300_firmware | 4.50 - 5.35 | - |
| zyxel | vpn50_firmware | 4.50 - 5.35 | - |
| zyxel | usg_20w-vpn_firmware | 4.30 - 5.35 | - |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability
Impact