CVE-2024-29973

Name: CVE-2024-29973
Creator: NVD / NIST
Published: 2024-06-04T02:15:48.29+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 86.20%

Last modified Jun 17, 2026

CVE-2024-29973 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. ** 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.. EPSS estimates a 86.20% chance of exploitation in the next 30 days.

Description

** 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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

86.20%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Zyxel	Nas326 Firmware	< 5.21\(aazf.17\)c0
Zyxel	Nas542 Firmware	< 5.21\(abag.14\)c0

References

https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/Exploit, Third Party Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nas-products-06-04-2024Vendor Advisory
https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/Exploit, Third Party Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nas-products-06-04-2024Vendor Advisory

Timeline

Published: Jun 4, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-29973?

How severe is CVE-2024-29973?

CVE-2024-29973 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 86.20% probability of exploitation in the next 30 days.

How do I fix CVE-2024-29973?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-29973?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST