Vulnerability Intelligence Report
CVE-2023-22918
A post-authentication information exposure vulnerability in the CGI program of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, VPN series firmware versions 4.30 through 5.35, NWA110AX firmware version 6.50(ABTG.2) and earlier versions, WAC500 firmware version 6.50(ABVS.0) and earlier versions, and WAX510D firmware version 6.50(ABTF.2) and earlier versions, which could allow a remote authenticated attacker to retrieve encrypted information of the administrator on an affected device.
No Active Exploit Signals
CVSS Base Score
6.5
MEDIUM
Exploitability:2.9
Impact Score:3.6
EPSS Probability:0.77%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-359 ↗CWE-359: Exposure of Private Personal Information to an Unauthorized Actor
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Zyxel | ATP series firmware | 4.32 through 5.35 (affected) |
| Zyxel | USG FLEX series firmware | 4.50 through 5.35 (affected) |
| Zyxel | USG FLEX 50(W) firmware | 4.16 through 5.35 (affected) |
| Zyxel | USG20(W)-VPN firmware | 4.16 through 5.35 (affected) |
| Zyxel | VPN series firmware | 4.30 through 5.35 (affected) |
| Zyxel | NWA110AX firmware | <= 6.50(ABTG.2) (affected) |
| Zyxel | WAC500 firmware | <= 6.50(ABVS.0) (affected) |
| Zyxel | WAX510D firmware | <= 6.50(ABTF.2) (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.771%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Zyxel Corporation · Vendor · Taiwan |
| Reserved | 2023-01-10T00:00:00 |
| Published | 2023-04-24T00:00:00 |
| Last Updated | 2025-02-12T16:01:35 |
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