Vulnerability · Published Jul 17, 2023 · Assigned by Zyxel
CVE-2023-33012
High 8.8
In plain English
A high-severity OS command injection in ATP series firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 9.9% (higher than 96% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit.
Official description
A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted GRE configuration when the cloud management mode is enabled.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | ATP series firmware | 5.10 through 5.36 Patch 2 |
| Zyxel | USG FLEX series firmware | 5.00 through 5.36 Patch 2 |
| Zyxel | USG FLEX 50(W) series firmware | 5.10 through 5.36 Patch 2 |
| Zyxel | USG20(W)-VPN series firmware | 5.10 through 5.36 Patch 2 |
| Zyxel | VPN series firmware | 5.00 through 5.36 Patch 2 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H