
CVE-2022-38547
https://notcve.org/view.php?id=CVE-2022-38547
07 Feb 2023 — A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands. • https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-rce-in-firewalls • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •

CVE-2022-40603
https://notcve.org/view.php?id=CVE-2022-40603
06 Dec 2022 — A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL/USG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser. Una v... • https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-xss-vulnerability-in-firewalls • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2022-2030
https://notcve.org/view.php?id=CVE-2022-2030
19 Jul 2022 — A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN ... • https://www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal-vulnerabilities-of-firewalls.shtml • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •

CVE-2022-30526 – Zyxel Firewall SUID Binary Privilege Escalation
https://notcve.org/view.php?id=CVE-2022-30526
19 Jul 2022 — A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware vers... • https://packetstorm.news/files/id/168202 • CWE-269: Improper Privilege Management •

CVE-2022-0342
https://notcve.org/view.php?id=CVE-2022-0342
28 Mar 2022 — An authentication bypass vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.20, VPN series firmware versions 4.30 through 5.20, and NSG series firmware versions V1.20 through V1.33 Patch 4, which could allow an attacker to bypass the web authentication and obtain administrative access of the device. Una vulnerabilidad de omisión de autenticación en el programa CGI de... • https://www.zyxel.com/support/Zyxel-security-advisory-for-authentication-bypass-vulnerability-of-firewalls.shtml • CWE-287: Improper Authentication •

CVE-2021-35029
https://notcve.org/view.php?id=CVE-2021-35029
02 Jul 2021 — An authentication bypasss vulnerability in the web-based management interface of Zyxel USG/Zywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device. Una vulnerabilidad de omisión de la autenticación en la interfaz de administración basada en web de Zyxel USG/Zywall series versiones de firmware 4.35 hasta 4.64 y USG Flex, ATP, y VPN versiones de firmware 4.35... • https://www.zyxel.com/support/Zyxel_security_advisory_for_attacks_against_security_appliances.shtml • CWE-287: Improper Authentication •

CVE-2020-29583 – Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability
https://notcve.org/view.php?id=CVE-2020-29583
22 Dec 2020 — Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This account can be used by someone to login to the ssh server or web interface with admin privileges. La versión de firmware 4.60 de los dispositivos Zyxel USG contiene una cuenta no documentada (zyfwp) con una contraseña que no puede ser cambiada. La contraseña para esta cuenta se puede encontrar en texto sin cifrar... • https://github.com/ruppde/scan_CVE-2020-29583 • CWE-522: Insufficiently Protected Credentials •

CVE-2020-9054 – Zyxel Multiple NAS Devices OS Command Injection Vulnerability
https://notcve.org/view.php?id=CVE-2020-9054
04 Mar 2020 — Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. ZyXEL NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the pr... • https://github.com/darrenmartyn/CVE-2020-9054 • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •