Usg20w-vpn Firmware vulnerabilities

11 known vulnerabilities in Usg20w-vpn Firmware from Zyxel. 11 are rated high or critical, and 3 have been exploited in real attacks. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.

Latest first

• 8.1 High severity

  ATP series firmware: Use of Externally-Controlled Format String

  CVE-2023-6764Feb 20, 2024Zyxel

  A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 throu

• 7.2 High severity

  ATP series firmware: Improper Neutralization of Special Elements used in an OS Command

  CVE-2023-6398Feb 20, 2024ZyxelEPSS 1.33%

  A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from

• 7.5 High severity

  ATP series firmware: Integer Overflow or Wraparound

  CVE-2023-4398Nov 28, 2023Zyxel

  An integer overflow vulnerability in the source code of the QuickSec IPSec toolkit used in the VPN feature of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions

• 8.0 High severity

  ATP series firmware: Improper Neutralization of Special Elements used in an OS Command

  CVE-2023-34141Jul 17, 2023Zyxel

  A command injection vulnerability in the access point (AP) management feature of the Zyxel ATP series firmware versions 5.00 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.00 through

• 8.0 High severity

  ATP series firmware: Improper Neutralization of Special Elements used in an OS Command

  CVE-2023-34138Jul 17, 2023Zyxel

  A command injection vulnerability in the hotspot management feature of the Zyxel ATP series firmware versions 4.60 through 5.36 Patch 2, USG FLEX series firmware versions 4.60 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 4.60 through 5.36 Patc

• 8.8 High severity

  ATP series firmware: Use of Externally-Controlled Format String

  CVE-2023-33011Jul 17, 2023Zyxel

  A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware vers

• 7.2 High severity

  ZyWALL/USG series firmware: Improper Neutralization of Special Elements used in an OS Command

  CVE-2022-38547Feb 7, 2023ZyxelEPSS 2.83%

  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 firmwar

• 7.8 High severity

  USG FLEX 100(W) firmware: Improper Privilege Management

  CVE-2022-30526Jul 19, 2022ZyxelEPSS 1.14%

  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 versi

• 9.8 Critical severity

  Zyxel Multiple Firewalls OS Command Injection Exploited

  CVE-2022-30525May 12, 2022ZyxelEPSS 99.9%

  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 firmw

• 9.8 Critical severity

  Zyxel Multiple Products Use of Hard-Coded Credentials Exploited

  CVE-2020-29583Dec 22, 2020ZyxelEPSS 90%

  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 in

• 9.8 Critical severity

  Zyxel Multiple NAS Devices OS Command Injection Exploited

  CVE-2020-9054Mar 4, 2020ZyxelEPSS 100%

  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 dev