Vulnerability · Published Apr 22, 2025 · Assigned by Zyxel
CVE-2025-1731
High 7.8
In plain English
A high-severity incorrect permission assignment in USG FLEX H series uOS firmware from Zyxel. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 61% of all known vulnerabilities).
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | USG FLEX H series uOS firmware | from V1.20 through V1.31 |
Weakness: CWE-732 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H