CVE-2025-1732: Zyxel Uos

Medium severity, CVSS 6.7. EPSS: 0.2% chance of exploitation in the next 30 days.

An improper privilege management vulnerability in the recovery function of the Zyxel USG FLEX H series uOS firmware version V1.31 and earlier could allow an authenticated local attacker with administrator privileges to upload a crafted configuration file and escalate privileges on a vulnerable device.

Affected products

• Zyxel Uos: version 1.31 only

Published 2025-04-22. Last modified 2026-06-17.