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Standard
Vulnerability Identifier

CVE-2025-1731

2025-04-22
Severity Assessment
7.8
HIGH
CVSS v3.x Score
Clinical Analysis (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.

Vector Sequencing

Attack Parameters

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Impact Consequences

Technical Impact

Unchanged
Scope
High
Confidentiality
High
Integrity
High
Availability
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Classification

CWE-CWE-732

Affected Population

Affected Configurations

Total: 4 detected entries

Software List Scrollable
zy
uos
Vendor: zyxel • v1.20
zy
uos
Vendor: zyxel • v1.30
zy
uos
Vendor: zyxel • v1.31
zy
uos
Vendor: zyxel • v1.21
Timeline

Time Line

PUBLICATION
22 Apr 2025
MODIFICATION
30 Oct 2025
Impact Statistics

Key Metrics

CVSS Score
7.8
HIGH
Products
4
Affected
Public Exploit Available
Remediation Protocol

Recommended Solution

No automatic solution found. Check vendor references.
Patch Library
No direct patch listed in database.
Recommended Actions for Administrators

Immediate Action Plan

1. Inventory

Identify all affected systems in your infrastructure.

2. Assessment

Assess exposure and criticality for your organization.

3. Mitigation

Apply patches or available workarounds.

4. Verification

Test and confirm effectiveness of applied measures.