High Severity Vulnerability
This vulnerability has been rated as High severity. Immediate action is recommended.
CVE-2025-1731
HighVulnerability 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.
CVSS Metrics
Common Vulnerability Scoring System
Vector String:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Known Affected Software
4 configuration(s) from 1 vendor(s)
cpe:2.3:o:zyxel:uos:1.20:patch2:*:*:*:*:*:*
cpe:2.3:o:zyxel:uos:1.30:-:*:*:*:*:*:*
cpe:2.3:o:zyxel:uos:1.31:-:*:*:*:*:*:*
cpe:2.3:o:zyxel:uos:1.21:-:*:*:*:*:*:*
References & Resources
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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-04-22-2025security@zyxel.com.tw Vendor Advisory
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http://seclists.org/fulldisclosure/2025/Apr/27af854a3a-2127-422b-91ae-364da2661108 Mailing List
Severity Details
Key Information
- Published Date
- April 22, 2025
