Public vulnerability disclosure

CVE-2024-29972

CVE-2024-29972

publishedCWE-78

** 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.

Technical severity9.8 criticalCVSS 3.1 · CNA: Zyxel
Published2024-06-04Source updated 2026-11-03
Collected2026-11-032 attributed sources

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
NAS326 firmware
Zyxel
< V5.21(AAZF.17)C0 (affected)
Other versions: unaffected
CNA: Zyxel
NAS542 firmware
Zyxel
< V5.21(ABAG.14)C0 (affected)
Other versions: unaffected
CNA: Zyxel
nas326_firmware
zyxel
≥ 0; < v5.21\(aazf.17\)co (affected, custom)
Other versions: unknown
ADP: CISA-ADP
nas542_firmware
zyxel
≥ 0; < 5.21\(abag.14\)co (affected, custom)
Other versions: unknown
ADP: CISA-ADP

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 9.8
critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCNA: Zyxel

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

For agents and automation

Read public disclosures for free as Markdown or JSON. Compatible browsers also expose native WebMCP tools to search disclosures, read this page, and discover API access.

Use the ontology-linked Cyber API with x402 pay per request, or a Y2 Pro or Elite API key with the intel:cyber scope.

Endpoints and access details

https://api.y2.dev/api/v2/cyber/cves
https://api.y2.dev/api/v2/cyber/cves/{cveId}

A workspace owner or admin can create a Pro or Elite API key. Send Authorization: Bearer <Y2_API_KEY> from your trusted agent runtime.

For x402, omit Authorization and read the HTTP 402 payment challenge before signing a retry. Public browser tools do not make payments.

Agent access JSON · OpenAPI · CVE API guide