Vulnerability Intelligence Report
CVE-2022-2030
A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.11 through 4.72, that could allow an authenticated attacker to access some restricted files on a vulnerable device.
No Active Exploit Signals
CVSS Base Score
6.5
MEDIUM
Exploitability:2.9
Impact Score:3.6
EPSS Probability:0.98%
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-22 ↗CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Zyxel | USG FLEX 100(W) firmware | 4.50 through 5.30 (affected) |
| Zyxel | USG FLEX 200 firmware | 4.50 through 5.30 (affected) |
| Zyxel | USG FLEX 500 firmware | 4.50 through 5.30 (affected) |
| Zyxel | USG FLEX 700 firmware | 4.50 through 5.30 (affected) |
| Zyxel | ATP series firmware | 4.32 through 5.30 (affected) |
| Zyxel | VPN series firmware | 4.30 through 5.30 (affected) |
| Zyxel | USG FLEX 50(W) firmware | 4.16 through 5.30 (affected) |
| Zyxel | USG 20(W)-VPN firmware | 4.16 through 5.30 (affected) |
| Zyxel | USG/ZyWALL series firmware | 4.11 through 4.72 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.983%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Zyxel Corporation · Vendor · Taiwan |
| Reserved | 2022-06-08T00:00:00 |
| Published | 2022-07-19T05:55:11 |
| Last Updated | 2024-08-03T00:24:44 |
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