CVE-2023-28771 — Actively Exploited: Multiple Firewalls (Zyxel)
Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.
| CVE ID | CVE-2023-28771 |
|---|---|
| Vendor | Zyxel |
| Product | Multiple Firewalls |
| Vulnerability name | Zyxel Multiple Firewalls OS Command Injection Vulnerability |
| Date added | 2023-05-31 |
| Remediation due | 2023-06-21 |
| Known ransomware use | Unknown |
| Required action | Apply updates per vendor instructions. |
| Description | Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device. |
| Source | CISA Known Exploited Vulnerabilities |
🔍 Search all exploited vulnerabilities →
$1499/mo
Try ExploitWatch →