CVE-2025-1731
Zyxel uOS 1.31 Privilege Escalation
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
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.
Una vulnerabilidad de asignación incorrecta de permisos en los comandos PostgreSQL de las versiones de firmware uOS de la serie USG FLEX H, de la V1.20 a la V1.31, podría permitir que un atacante local autenticado con privilegios bajos acceda al shell de Linux y aumente sus privilegios mediante la creación de scripts maliciosos o la modificación de la configuración del sistema con acceso de administrador mediante un token robado. La modificación de la configuración del sistema solo es posible si el administrador no ha cerrado sesión y el token sigue siendo válido.
The USG FLEX H Series with the operating system Zyxel uOS version 1.31 suffers from a local privilege escalation vulnerability via the setuid binary fermion-wrapper.
CVSS Scores
SSVC
- Decision:Attend
Timeline
- 2025-02-27 CVE Reserved
- 2025-04-22 CVE Published
- 2025-04-23 First Exploit
- 2025-04-28 EPSS Updated
- 2025-05-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-732: Incorrect Permission Assignment for Critical Resource
CAPEC
References (3)
| URL | Tag | Source |
|---|---|---|
| http://seclists.org/fulldisclosure/2025/Apr/27 |
|
| URL | Date | SRC |
|---|---|---|
| https://packetstorm.news/files/id/190622 | 2025-04-23 |
| URL | Date | SRC |
|---|