CVE-2025-1731: An incorrect permission assignment vulnerability in the PostgreSQL commands of the USG FLEX H series uOS firmware versions from V1.20 through V1.31...
Description
An incorrect permission assignment vulnerability in the PostgreSQL commands of the 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.
Classification
CVE ID: CVE-2025-1731
CVSS Base Severity: HIGH
CVSS Base Score: 7.8
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
Vendor: Zyxel
Product: USG FLEX H series uOS firmware
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.06% (probability of being exploited)
EPSS Percentile: 17.45% (scored less or equal to compared to others)
EPSS Date: 2025-05-20 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-1731https://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