CVSS 3.1 Score 9.8 of 10 (high)


Published Nov 30, 2023
Updated: Dec 6, 2023


CVE-2023-4473 is a command injection vulnerability found in the web server of Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0. This vulnerability could potentially allow an unauthorized attacker to execute operating system (OS) commands by sending a crafted URL to a vulnerable device. The affected products include tsXObX, iQCG0Y, rj9bEm, iQCG0Z, rj9bEl, qPkLex, rj9bEi, iQCG0f, and tsXObY. The risk score of this vulnerability is 74 out of 100, with a base severity of "CRITICAL." To remediate this vulnerability, it is recommended to update the affected firmware versions to a patched release provided by Zyxel. This vulnerability poses a high danger to organizations as it can be exploited remotely without requiring any user interaction and can lead to unauthorized execution of commands with high impact on confidentiality and integrity of data.


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