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CVE-2023-27992Zyxel Multiple NAS Devices Command Injection Vulnerability
The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.
9.8 CRITICALEPSS 82.26%⚡ Known Exploited (CISA KEV)NVD: Published
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.8 | CRITICAL | 3.1Zyxel (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Details
- CVE ID
- CVE-2023-27992
- Status
- Published
- Assigner (CNA)
- Zyxel
- Published
- Jun 19, 2023
- Last modified
- 2025-10-21 23:05 UTC
- Weaknesses
- CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products
As published by the CNA in the CVE record.
ZyxelNAS326 firmware1 version range
- < V5.21(AAZF.14)C0
ZyxelNAS540 firmware1 version range
- < V5.21(AATB.11)C0
ZyxelNAS542 firmware1 version range
- < V5.21(ABAG.11)C0
References
Sources
- NVD (unavailable at last refresh)
- CVE.org
- CISA KEV
- FIRST EPSS