EXPOSURES › CVE-2023-33009
CVE-2023-33009
HIGH ⌖ ON CISA KEV · EXPLOITEDZyxel Multiple Firewalls Buffer Overflow Vulnerability
A buffer overflow vulnerability in Zyxel firewalls allows remote code execution, posing a significant risk to DIB/CMMC compliance and exposing devices to potential data breaches and denial-of-service attacks.
Shame score — High-severity vulnerability with remote code execution capabilities, indicating a significant risk to DIB/CMMC compliance and potential data breaches.
▸ RECOMMENDED ACTION Actively exploited (CISA KEV) — remediate now, ahead of your normal patch cycle.
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.