CVE-2023-27992: The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware...

9.8 CVSS

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.

Classification

CVE ID: CVE-2023-27992

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

Affected Products

Vendor: Zyxel

Product: NAS326 firmware

Exploit Prediction Scoring System (EPSS)

EPSS Score: 2.94% (probability of being exploited)

EPSS Percentile: 90.74% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-pre-authentication-command-injection-vulnerability-in-nas-products

Timeline