OS Command Injection Vulnerability in Zyxel USG FLEX Firewall
CVE-2022-30525

9.8CRITICAL

Key Information:

Vendor: Zyxel
Status: Usg Flex 100(w) Firmware; Usg Flex 200 Firmware; Usg Flex 500 Firmware; Usg Flex 700 Firmware
Vendor: CVE Published:; 12 May 2022

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 97%🦅 CISA Reported

Summary

A vulnerability in the CGI program of Zyxel USG FLEX firewalls could allow an attacker to execute arbitrary OS commands and modify files on vulnerable devices, potentially compromising their security. This issue affects multiple firmware versions across various Zyxel USG FLEX models, necessitating immediate review and updates to mitigate risks.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply updates per vendor instructions.

Affected Version(s)

ATP series firmware 5.10 through 5.21 Patch 1

USG 20(W)-VPN firmware 5.10 through 5.21 Patch 1

USG FLEX 100(W) firmware 5.00 through 5.21 Patch 1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2022-30525
Created by shuai06

victorian_machinery
Created by jbaines-r7

CVE-2022-30525
Created by Henry4E36