What’s Vulnerable › Vulnerabilities

CVE-2024-29974

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 22.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-06-04 · updated 2026-06-17
• Weakness: CWE-434

Description

** UNSUPPORTED WHEN ASSIGNED ** The remote code execution vulnerability in the CGI program “file_upload-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 arbitrary code by uploading a crafted configuration file to a vulnerable device.

Affected products

• Zyxel NAS326 firmware: before 5.21\(aazf.17\)c0 — fixed in 5.21\(aazf.17\)c0
• Zyxel NAS542 firmware: before 5.21\(abag.14\)c0 — fixed in 5.21\(abag.14\)c0

How to fix

Upgrade to a fixed version: Zyxel NAS326 firmware 5.21\(aazf.17\)c0; Zyxel NAS542 firmware 5.21\(abag.14\)c0. Check the vendor advisory for mitigations.

References

• https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/
• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nas-products-06-04-2024
• https://outpost24.com/blog/zyxel-nas-critical-vulnerabilities/
• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nas-products-06-04-2024

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