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Fencer Intel
critical 9.8

CVE-2024-29973 in the critical feed json

** UNSUPPORTED WHEN ASSIGNED ** The command injection vulnerability in the “setCookie” parameter in Zyxel NAS326 firmware versions before V…

published 2y ago modified 4mo ago also EUVD-2024-26947

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
86.2%
EPSS 86.2% chance of exploitation in 30 days, percentile 99.7%
public exploits
0
none known

Summary

** UNSUPPORTED WHEN ASSIGNED ** The command injection vulnerability in the “setCookie” parameter 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

86.21% chance of exploitation in the next 30 days, higher than 99.7% 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.