Vulnerability Details : 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 execute some operating system (OS) commands by sending a crafted URL to a vulnerable device.
Products affected by CVE-2023-4473
- cpe:2.3:o:zyxel:nas326_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:nas542_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-4473
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 15 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-4473
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
Zyxel Corporation |
CWE ids for CVE-2023-4473
-
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.Assigned by: security@zyxel.com.tw (Primary)
References for CVE-2023-4473
-
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/
CVE-2023-4473 & CVE-2023-4474 - Authentication bypass and multiple blind OS command injection vulnerabilities in Zyxel’s NAS326 devices
-
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products
Zyxel security advisory for authentication bypass and command injection vulnerabilities in NAS products | Zyxel NetworksPatch;Vendor Advisory
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