CVE-2023-4474

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

The improper neutralization of special elements in the WSGI 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.

La neutralización inadecuada de elementos especiales en el servidor WSGI del firmware Zyxel NAS326 versión V5.21(AAZF.14)C0 y NAS542 versión V5.21(ABAG.11)C0 podría permitir que un atacante no autenticado ejecute algún sistema operativo (OS ) comandos enviando una URL manipulada a un dispositivo vulnerable.

*Credits: N/A

CVSS Scores

Zyxel Corporationv3.1 9.8

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

PoC

Automatable

Yes

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2023-08-22 CVE Reserved
2023-11-30 CVE Published
2024-08-02 CVE Updated
2024-10-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

References (2)

URL	Tag	Source
https://bugprove.com/knowledge-hub/cve-2023-4473-and-cve-2023-4474-authentication-bypass-and-multiple-blind-os-command-injection-vulnerabilities-in-zyxel-s-nas-326-devices

URL	Date	SRC

URL	Date	SRC
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products	2023-12-06

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Zyxel Search vendor "Zyxel"	Nas326 Firmware Search vendor "Zyxel" for product "Nas326 Firmware"	<= 5.21\(aazf.14\)c0 Search vendor "Zyxel" for product "Nas326 Firmware" and version " <= 5.21\(aazf.14\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Nas326 Search vendor "Zyxel" for product "Nas326"	-	-	Safe
Zyxel Search vendor "Zyxel"	Nas542 Firmware Search vendor "Zyxel" for product "Nas542 Firmware"	<= 5.21\(abag.11\)c0 Search vendor "Zyxel" for product "Nas542 Firmware" and version " <= 5.21\(abag.11\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Nas542 Search vendor "Zyxel" for product "Nas542"	-	-	Safe