---
id: CVE-2024-29972
title: "** UNSUPPORTED WHEN ASSIGNED **\nThe command injection vulnerability in the CGI program \"remote_help-cgi\" in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before\_V5.21(ABAG.14)C0\_could allow an unauth…"
summary: "** UNSUPPORTED WHEN ASSIGNED **\nThe command injection vulnerability in the CGI program \"remote_help-cgi\" in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before\_V5.21(ABAG.14)C0\_could allow an unauth…"
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
vendor: zyxel
product: nas326_firmware
affected:
  - nas326_firmware < 5.21\(aazf.17\)c0
  - nas542_firmware < 5.21\(abag.14\)c0
patched:
  - nas326_firmware 5.21\(aazf.17\)c0
  - nas542_firmware 5.21\(abag.14\)c0
published: '2024-06-04'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T22:17:17.650'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-29972'
references:
  - url: 'https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/'
    label: security@zyxel.com.tw
  - url: >-
      https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nas-products-06-04-2024
    label: security@zyxel.com.tw
  - url: 'https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nas-products-06-04-2024
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2024-06-26T03:55:25.594330Z'
epss: 0.90349
epssPercentile: 0.998
exploits:
  github: 2
  githubRepos:
    - 'https://github.com/WanLiChangChengWanLiChang/CVE-2024-29972'
    - >-
      https://github.com/Pommaq/CVE-2024-29972-CVE-2024-29976-CVE-2024-29973-CVE-2024-29975-CVE-2024-29974-poc
  nuclei:
    - CVE-2024-29972
  checkedAt: '2026-11-05T06:38:49.868Z'
ingestedAt: '2026-11-05T06:38:03.565Z'
---

## Overview

** UNSUPPORTED WHEN ASSIGNED **
The command injection vulnerability in the CGI program "remote_help-cgi" in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST request.

## Affected

- `nas326_firmware < 5.21\(aazf.17\)c0`
- `nas542_firmware < 5.21\(abag.14\)c0`

## Remediation

Upgrade past the affected range:

- `nas326_firmware 5.21\(aazf.17\)c0`
- `nas542_firmware 5.21\(abag.14\)c0`