Vulnerability Intelligence Report
CVE-2023-33011
A format string vulnerability in 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 PPPoE configuration on an affected device 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:0.30%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-134 ↗CWE-134 Use of Externally-Controlled Format String
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
0.303%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Zyxel Corporation · Vendor · Taiwan |
| Reserved | 2023-05-17T02:56:16 |
| Published | 2023-07-17T17:15:45 |
| Last Updated | 2024-11-07T19:08:01 |
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