CVE-2025-1731

Published: Apr 22, 2025Modified: Jun 17, 2026

7.8

Vector

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

Exploitability: 1.8 / Impact: 5.9

Source: security@zyxel.com.tw (Secondary)

Description

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.

Affected (1)

Products: Zyxel: Uos

Zyxel

1 product

Uos

Configuration A

1 vulnerable · 8 platform

Vulnerable Software	Affected Versions
Zyxel Uos	From 1.20 to 1.32

Running on/with	Platform Versions
Zyxel Usg Flex 100h	All versions
Zyxel Usg Flex 100hp	All versions
Zyxel Usg Flex 200h	All versions
Zyxel Usg Flex 200hp	All versions
Zyxel Usg Flex 500h	All versions
Zyxel Usg Flex 50h	All versions
Zyxel Usg Flex 50hp	All versions
Zyxel Usg Flex 700h	All versions

Related CWEs

CWE-732

Incorrect Permission Assignment for Critical Resource

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

References (2)

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-incorrect-permission-assignment-and-improper-privilege-management-vulnerabilities-in-usg-flex-h-series-firewalls-04-22-2025

Source: security@zyxel.com.tw

Vendor Advisory

http://seclists.org/fulldisclosure/2025/Apr/27

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing List

Timeline

No history available yet.