CVE-2024-29976: Zyxel NAS326 Firmware

Medium severity, CVSS 6.5. EPSS: 9% chance of exploitation in the next 30 days.

** UNSUPPORTED WHEN ASSIGNED ** The improper privilege management vulnerability in the command “show_allsessions” in Zyxel NAS326 firmware versions before V5.21(AAZF.17)C0 and NAS542 firmware versions before V5.21(ABAG.14)C0 could allow an authenticated attacker to obtain a logged-in administrator’s session information containing cookies on an affected 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)

Published 2024-06-04. Last modified 2026-06-17.