CVE-2022-30525
Description
A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.
How to fix
Apply updates per vendor instructions.
CISA due date: Jun 6, 2022- zyxel usg_flex_100w_firmware5.30 or later
- zyxel usg_flex_200_firmware5.30 or later
- zyxel usg_flex_700_firmware5.30 or later
- zyxel vpn100_firmware5.30 or later
- zyxel vpn1000_firmware5.30 or later
- zyxel vpn300_firmware5.30 or later
- zyxel vpn50_firmware5.30 or later
- zyxel atp100_firmware5.30 or later
- zyxel atp100w_firmware5.30 or later
- zyxel atp200_firmware5.30 or later
- zyxel atp500_firmware5.30 or later
- zyxel atp700_firmware5.30 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zyxel usg_flex_100w_firmware | 5.00 ≤ v < 5.30 | 5.30 |
| zyxel usg_flex_200_firmware | 5.00 ≤ v < 5.30 | 5.30 |
| zyxel usg_flex_500_firmware | 5.00 ≤ v ≤ 5.30 | — |
| zyxel usg_flex_700_firmware | 5.00 ≤ v < 5.30 | 5.30 |
| zyxel vpn100_firmware | 4.60 ≤ v < 5.30 | 5.30 |
| zyxel vpn1000_firmware | 4.60 ≤ v < 5.30 | 5.30 |
| zyxel vpn300_firmware | 4.60 ≤ v < 5.30 | 5.30 |
| zyxel vpn50_firmware | 4.60 ≤ v < 5.30 | 5.30 |
| zyxel atp100_firmware | 5.10 ≤ v < 5.30 | 5.30 |
| zyxel atp100w_firmware | 5.10 ≤ v < 5.30 | 5.30 |
| zyxel atp200_firmware | 5.10 ≤ v < 5.30 | 5.30 |
| zyxel atp500_firmware | 5.10 ≤ v < 5.30 | 5.30 |
| zyxel atp700_firmware | 5.10 ≤ v < 5.30 | 5.30 |
| zyxel atp800_firmware | 5.10 ≤ v < 5.30 | 5.30 |
| zyxel usg_flex_50w_firmware | 5.10 ≤ v < 5.30 | 5.30 |
| zyxel usg20w-vpn_firmware | 5.10 ≤ v < 5.30 | 5.30 |
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