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Fencer Intel
critical 9.8

CVE-2024-29972 in the critical feed json

** UNSUPPORTED WHEN ASSIGNED ** The command injection vulnerability in the CGI program "remote_help-cgi" in Zyxel NAS326 firmware versions…

published 2y ago modified 8d ago also EUVD-2024-26946

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
90.3%
EPSS 90.3% chance of exploitation in 30 days, percentile 99.8%
public exploits
0
none known

Summary

** 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.

Patch / fix

  • zyxel nas326_firmware v5.21\(aazf.17\)co
  • zyxel nas542_firmware 5.21\(abag.14\)co

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
2y ago

Exploit prediction

90.35% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • outpost24.com https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Zyxel NAS326 firmware
  • Zyxel NAS542 firmware
  • zyxel nas326_firmware
  • zyxel nas542_firmware

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.