What’s Vulnerable › Products

Zyxel USG 20(W)-VPN firmware vulnerabilities

19 known vulnerabilities, 2 confirmed exploited in the wild (CISA KEV), 0 published in the last 12 months.

Check whether your Zyxel USG 20(W)-VPN firmware version is affected

Exploited Zyxel USG 20(W)-VPN firmware vulnerabilities

• CVE-2023-33010 — Zyxel Multiple Firewalls Buffer Overflow Vulnerability
• CVE-2023-33009 — Zyxel Multiple Firewalls Buffer Overflow Vulnerability

Latest Zyxel USG 20(W)-VPN firmware vulnerabilities

• CVE-2023-34141 — (CVSS 8.0)
• CVE-2023-34140 — (CVSS 6.5)
• CVE-2023-34138 — (CVSS 8.0)
• CVE-2023-33012 — (CVSS 8.8)
• CVE-2023-33011 — (CVSS 8.8)
• CVE-2023-28767 — (CVSS 8.8)
• CVE-2023-33010 — Zyxel Multiple Firewalls Buffer Overflow Vulnerability (CVSS 9.8) — exploited
• CVE-2023-33009 — Zyxel Multiple Firewalls Buffer Overflow Vulnerability (CVSS 9.8) — exploited
• CVE-2023-27991 — (CVSS 8.8)
• CVE-2023-27990 — (CVSS 4.8)
• CVE-2023-22918 — (CVSS 6.5)
• CVE-2023-22917 — (CVSS 7.5)
• CVE-2023-22916 — (CVSS 8.1)
• CVE-2023-22915 — (CVSS 7.5)
• CVE-2022-26532 — (CVSS 7.8)
• CVE-2022-26531 — (CVSS 7.8)
• CVE-2022-0910 — (CVSS 6.5)
• CVE-2022-0734 — (CVSS 6.1)
• CVE-2018-9129 — (CVSS 5.9)