Riskcovery

CVE-2023-27992

State
Published
Severity
9.8 Critical
Published
Jun 19, 2023
Updated
Oct 21, 2025
Reserved
Mar 9, 2023

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HZyxel

Weaknesses

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

ProductVersions
NAS326 firmwareZyxel
  • < V5.21(AAZF.14)C0Affected
NAS540 firmwareZyxel
  • < V5.21(AATB.11)C0Affected
NAS542 firmwareZyxel
  • < V5.21(ABAG.11)C0Affected

References

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