Vulnerability Intelligence Report
CVE-2023-22917
A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5.32, USG FLEX series firmware versions 5.00 through 5.32, USG FLEX 50(W) firmware versions 5.10 through 5.32, USG20(W)-VPN firmware versions 5.10 through 5.32, and VPN series firmware versions 5.00 through 5.35, which could allow a remote unauthenticated attacker to cause a core dump with a request error message on a vulnerable device by uploading a crafted configuration file.
No Active Exploit Signals
CVSS Base Score
7.5
HIGH
Exploitability:3.9
Impact Score:3.6
EPSS Probability:0.88%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-120 ↗CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Zyxel | ATP series firmware | 5.10 through 5.32 (affected) |
| Zyxel | USG FLEX series firmware | 5.00 through 5.32 (affected) |
| Zyxel | USG FLEX 50(W) firmware | 5.10 through 5.32 (affected) |
| Zyxel | USG20(W)-VPN firmware | 5.10 through 5.32 (affected) |
| Zyxel | VPN series firmware | 5.00 through 5.35 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.879%
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 | 2025-02-12T16:02:01 |
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