CVE-2023-33010β€”Zyxel Multiple Firewalls Buffer Overflow Vulnerability

PUBLISHEDvulnerability record
2023-06-05 Β· last modified June 21, 2025

Metadata

CVE ID:
CVE-2023-33010
Project:
Zyxel
Product:
Multiple Firewalls
Date Added:
2023-06-05
Due Date:
2023-06-26
Last Updated:
June 21, 2025

Vulnerability Name

Zyxel Multiple Firewalls Buffer Overflow Vulnerability

Description

Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the ID processing function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

Action

Apply updates per vendor instructions.

Additional 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-2023-33010

Related Weaknesses

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