CVE-2023-33009
ZY
Zyxel Multiple Firewalls
Zyxel Multiple Firewalls Buffer Overflow Vulnerability
What it is
Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the notification function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.
What to do
Apply updates per vendor instructions.
Vendor notices and references
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-b
- nvd.nist.gov/vuln/detail/CVE-2023-33009
Description and required action as published by CISA. Full record at NVD.
Other Zyxel entries on the list
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- DSL CPE Devices Zyxel DSL CPE OS Command Injection Vulnerability CVE-2024-40891 · Feb 11, 2025
- DSL CPE Devices Zyxel DSL CPE OS Command Injection Vulnerability CVE-2024-40890 · Feb 11, 2025
- Multiple Firewalls Zyxel Multiple Firewalls Path Traversal Vulnerability CVE-2024-11667 · Dec 3, 2024
- EMG2926 Routers Zyxel EMG2926 Routers Command Injection Vulnerability CVE-2017-6884 · Sep 18, 2023
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