Vulnerability Intelligence Report
CVE-2023-33012
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.
No Active Exploit Signals
CVSS Base Score
8.8
HIGH
Exploitability:2.9
Impact Score:5.9
EPSS Probability:10.14%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-78 ↗CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Zyxel | ATP series firmware | 5.10 through 5.36 Patch 2 (affected) |
| Zyxel | USG FLEX series firmware | 5.00 through 5.36 Patch 2 (affected) |
| Zyxel | USG FLEX 50(W) series firmware | 5.10 through 5.36 Patch 2 (affected) |
| Zyxel | USG20(W)-VPN series firmware | 5.10 through 5.36 Patch 2 (affected) |
| Zyxel | VPN series firmware | 5.00 through 5.36 Patch 2 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
10.140%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Zyxel Corporation · Vendor · Taiwan |
| Reserved | 2023-05-17T02:56:16 |
| Published | 2023-07-17T17:23:26 |
| Last Updated | 2025-03-05T18:48:53 |
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