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CRITICAL · 9.8

CVE-2023-4473

A command injection vulnerability in the web server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execut...

Vulnerability Description

A command injection vulnerability in the web server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
ZyxelNas326 Firmware<= 5.21\(aazf.14\)c0
ZyxelNas326-
ZyxelNas542 Firmware<= 5.21\(abag.11\)c0
ZyxelNas542-

Related Weaknesses (CWE)

CWE-78

References

FAQ

What is CVE-2023-4473?

CVE-2023-4473 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A command injection vulnerability in the web server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execut...

How severe is CVE-2023-4473?

CVE-2023-4473 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2023-4473?

Check the references section above for vendor advisories and patch information. Affected products include: Zyxel Nas326 Firmware, Zyxel Nas326, Zyxel Nas542 Firmware, Zyxel Nas542.