CVE-2022-30525

Published: May 12, 2022Modified: Oct 27, 2025CISA KEV

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

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.

Affected (16)

Products: Zyxel: Usg Flex 100w Firmware, Usg Flex 200 Firmware, Usg Flex 500 Firmware, Usg Flex 700 Firmware, Vpn100 Firmware, Vpn1000 Firmware, Vpn300 Firmware, Vpn50 Firmware, Atp100 Firmware, Atp100w Firmware, Atp200 Firmware, Atp500 Firmware, Atp700 Firmware, Atp800 Firmware, Usg Flex 50w Firmware, Usg20w Vpn Firmware

Zyxel

16 products

Usg Flex 100w Firmware

Usg Flex 200 Firmware

Usg Flex 500 Firmware

Usg Flex 700 Firmware

Usg Flex 50w Firmware

Usg20w Vpn Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 100w Firmware	From 5.00 to 5.30

Running on/with	Platform Versions
Zyxel Usg Flex 100w	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 200 Firmware	From 5.00 to 5.30

Running on/with	Platform Versions
Zyxel Usg Flex 200	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 500 Firmware	From 5.00 to 5.30

Running on/with	Platform Versions
Zyxel Usg Flex 500	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 700 Firmware	From 5.00 to 5.30

Running on/with	Platform Versions
Zyxel Usg Flex 700	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Vpn100 Firmware	From 4.60 to 5.30

Running on/with	Platform Versions
Zyxel Vpn100	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Vpn1000 Firmware	From 4.60 to 5.30

Running on/with	Platform Versions
Zyxel Vpn1000	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Vpn300 Firmware	From 4.60 to 5.30

Running on/with	Platform Versions
Zyxel Vpn300	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Vpn50 Firmware	From 4.60 to 5.30

Running on/with	Platform Versions
Zyxel Vpn50	All versions

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Atp100 Firmware	From 5.10 to 5.30

Running on/with	Platform Versions
Zyxel Atp100	All versions

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Atp100w Firmware	From 5.10 to 5.30

Running on/with	Platform Versions
Zyxel Atp100w	All versions

Configuration K

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Atp200 Firmware	From 5.10 to 5.30

Running on/with	Platform Versions
Zyxel Atp200	All versions

Configuration L

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Atp500 Firmware	From 5.10 to 5.30

Running on/with	Platform Versions
Zyxel Atp500	All versions

Configuration M

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Atp700 Firmware	From 5.10 to 5.30

Running on/with	Platform Versions
Zyxel Atp700	All versions

Configuration N

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Atp800 Firmware	From 5.10 to 5.30

Running on/with	Platform Versions
Zyxel Atp800	All versions

Configuration O

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg Flex 50w Firmware	From 5.10 to 5.30

Running on/with	Platform Versions
Zyxel Usg Flex 50w	All versions

Configuration P

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Zyxel Usg20w Vpn Firmware	From 5.10 to 5.30

Running on/with	Platform Versions
Zyxel Usg20w Vpn	All versions

Related CWEs

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References (11)

http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html

Source: security@zyxel.com.tw

Third Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html

Source: security@zyxel.com.tw

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html

Source: security@zyxel.com.tw

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html

Source: security@zyxel.com.tw

ExploitThird Party Advisory

https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml

Source: security@zyxel.com.tw

Vendor Advisory

http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html