VULNERABILITY INTELLIGENCE

CVE-2023-27992

CVSS score9.8 CRITICAL
EPSS probability82.26%
CISA KEVKnown exploited vulnerability
Published2023-06-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Zyxel Multiple NAS Devices Command Injection Vulnerability

Vendor / product: Zyxel / Multiple Network-Attached Storage (NAS) Devices

Description

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.

Weakness classification

  • security@zyxel.com.tw: CWE-78
  • nvd@nist.gov: CWE-78

Primary references