Zyxel Usg_20w-vpn
37 CVEs affecting Zyxel Usg_20w-vpn. Latest disclosed: 2025-10-21. Critical: 3, High: 18.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2023-33010 | Critical | 9.8 | 2023-05-24 | A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware version… |
CVE-2023-33009 | Critical | 9.8 | 2023-05-24 | A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions… |
CVE-2020-25014 | Critical | 9.8 | 2020-11-27 | A stack-based buffer overflow in fbwifi_continue.cgi on Zyxel UTM and VPN series of gateways running firmware version V4.30 through to V4.55 allows remote unau… |
CVE-2023-33012 | High | 8.8 | 2023-07-17 | A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware ver… |
CVE-2023-33011 | High | 8.8 | 2023-07-17 | 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… |
CVE-2023-28767 | High | 8.8 | 2023-07-17 | The configuration parser fails to sanitize user-controlled input in the Zyxel ATP series firmware versions 5.10 through 5.36, USG FLEX series firmware versions… |
CVE-2023-27991 | High | 8.8 | 2023-04-24 | The post-authentication command injection vulnerability in the CLI command of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware ve… |
CVE-2025-9133 | High | 8.1 | 2025-10-21 | A missing authorization vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series firmware versions from V4.50 through V5.4… |
CVE-2024-42057 | High | 8.1 | 2024-09-03 | A command injection vulnerability in the IPSec VPN feature of Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions fr… |
CVE-2023-22916 | High | 8.1 | 2023-04-24 | The configuration parser of Zyxel ATP series firmware versions 5.10 through 5.35, USG FLEX series firmware versions 5.00 through 5.35, USG FLEX 50(W) firmware… |
CVE-2023-34141 | High | 8.0 | 2023-07-17 | 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 ser… |
CVE-2023-34138 | High | 8.0 | 2023-07-17 | 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 firmwa… |
CVE-2022-26532 | High | 7.8 | 2022-05-24 | A argument injection vulnerability in the 'packet-trace' CLI command of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware v… |
CVE-2024-11667 | High | 7.5 | 2024-11-27 | A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware version… |
CVE-2024-42058 | High | 7.5 | 2024-09-03 | A null pointer dereference vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4.50 through V… |
CVE-2023-4398 | High | 7.5 | 2023-11-28 | 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 throu… |
CVE-2023-22917 | High | 7.5 | 2023-04-24 | A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5.32, USG FLEX series firmware versions 5.00… |
CVE-2023-22915 | High | 7.5 | 2023-04-24 | A buffer overflow vulnerability in the “fbwifi_forward.cgi” CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware v… |
CVE-2025-8078 | High | 7.2 | 2025-10-21 | A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series firmware versions from V4… |
CVE-2024-42060 | High | 7.2 | 2024-09-03 | A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4… |