Zyxel USG FLEX H Series Uos vulnerabilities

3 vulnerabilities

Known vulnerabilities in Zyxel USG FLEX H Series Uos, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

7.8CVE-2025-1731zyxeluos+1
EPSS score
0.94%
An incorrect permission assignment vulnerability in the PostgreSQL commands of the Zyxel USG FLEX H series uOS firmware versions from V1.20 through V1.31 could allow an authenticated local attacker with low privileges to gain access to the Linux shell and escalate their privileges by crafting malicious scripts or modifying system configurations with administrator-level access through a stolen token. Modifying the system configuration is only possible if the administrator has not logged out and the token remains valid.6.7CVE-2025-1732zyxeluos+1
EPSS score
0.20%
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.7.8CVE-2024-9677zyxeluos+1
EPSS score
0.15%
The insufficiently protected credentials vulnerability in the CLI command of the USG FLEX H series uOS firmware version V1.21 and earlier versions could allow an authenticated local attacker to gain privilege escalation by stealing the authentication token of a login administrator. Note that this attack could be successful only if the administrator has not logged out.