CRITICAL🚩 CISA KEV⚡ EXPLOIT✓ PATCH🇵🇱 Wersja polska

CVE-2022-30525

CVSS 9.8v3.1pub. 2022-05-12upd. 2025-10-27

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.

🇵🇱 Read Polish description →

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Zyxel Atp100
HW
Zyxel
all versions
Zyxel Atp100 Firmware
OS
Zyxel
5.10 – 5.30 (excl.)
Zyxel Atp100w
HW
Zyxel
all versions
Zyxel Atp100w Firmware
OS
Zyxel
5.10 – 5.30 (excl.)
Zyxel Atp200
HW
Zyxel
all versions
Zyxel Atp200 Firmware
OS
Zyxel
5.10 – 5.30 (excl.)
Zyxel Atp500
HW
Zyxel
all versions
Zyxel Atp500 Firmware
OS
Zyxel
5.10 – 5.30 (excl.)
Zyxel Atp700
HW
Zyxel
all versions
Zyxel Atp700 Firmware
OS
Zyxel
5.10 – 5.30 (excl.)
Zyxel Atp800
HW
Zyxel
all versions
Zyxel Atp800 Firmware
OS
Zyxel
5.10 – 5.30 (excl.)
Zyxel Usg20w Vpn
HW
Zyxel
all versions
Zyxel Usg20w Vpn Firmware
OS
Zyxel
5.10 – 5.30 (excl.)
Zyxel Usg Flex 100w
HW
Zyxel
all versions
Zyxel Usg Flex 100w Firmware
OS
Zyxel
5.00 – 5.30 (excl.)
Zyxel Usg Flex 200
HW
Zyxel
all versions
Zyxel Usg Flex 200 Firmware
OS
Zyxel
5.00 – 5.30 (excl.)
Zyxel Usg Flex 500
HW
Zyxel
all versions
Zyxel Usg Flex 500 Firmware
OS
Zyxel
5.00 – 5.30
Zyxel Usg Flex 50w
HW
Zyxel
all versions
Zyxel Usg Flex 50w Firmware
OS
Zyxel
5.10 – 5.30 (excl.)
Zyxel Usg Flex 700
HW
Zyxel
all versions
Zyxel Usg Flex 700 Firmware
OS
Zyxel
5.00 – 5.30 (excl.)
Zyxel Vpn100
HW
Zyxel
all versions
Zyxel Vpn1000
HW
Zyxel
all versions
Zyxel Vpn1000 Firmware
OS
Zyxel
4.60 – 5.30 (excl.)
Zyxel Vpn100 Firmware
OS
Zyxel
4.60 – 5.30 (excl.)
Zyxel Vpn300
HW
Zyxel
all versions
Zyxel Vpn300 Firmware
OS
Zyxel
4.60 – 5.30 (excl.)

CISA KEV — detailsi

Vendori: Zyxel
Producti: Multiple Firewalls
Added to KEVi: May 16, 2022
Remediation deadline (US Federal)i: June 6, 2022(overdue)

🇺🇸CISA KEV (original)↗

Required action (CISA)i

Apply updates per vendor instructions.

CISA descriptioni

A command injection vulnerability in the CGI program of some Zyxel firewall versions could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.

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