CVE-2023-33009

KEV

Zyxel Multiple Firewalls Buffer Overflow Vulnerability

Vendor / Project: Zyxel
Product: Multiple Firewalls
Date added: Jun 5, 2023
Due date: Jun 26, 2023
Known ransomware use: Unknown
CWEs: CWE-120

Description

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.

Required action

Apply updates per vendor instructions.

Notes

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls
https://nvd.nist.gov/vuln/detail/CVE-2023-33009