UNSUPPORTED WHEN ASSIGNED A command injection vulnerability in the export-cgi program of Zyxel NAS326 firmware versions through V5.21(A…

published 2024-09-10 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-47455

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.1%; EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits: 0; none known

**UNSUPPORTED WHEN ASSIGNED** A command injection vulnerability in the export-cgi program of Zyxel NAS326 firmware versions through V5.21(AAZF.18)C0 and NAS542 firmware versions through V5.21(ABAG.15)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST request.

Patch / fix

fixed in 2

zyxel nas326_firmware 5.21\(aazf.18\)c0
zyxel nas542_firmware 5.21\(abag.15\)c0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 2 y ago (2024-09-10)

Exploit prediction

2.06% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

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

zyxel.com /global/en/support/security-advisories/zyxel-security-advisory-for-os-command-injection-vulnerability-in-nas-p
vendor-advisory

Sources

CVE List CVE-2024-6342
NVD CVE-2024-6342

Fencer Vulns 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.

Summary