CVE-2019-25237CWE-863

V-SOL GPON/EPON OLT Platform 2.03 Privilege Escalation via User Role Parameter

High · published December 24, 2025

CVSS v4.0
8.7
EPSS
0%
Percentile
28.1
In the wild
Unconfirmed
What it is

⚡ Normal users can become the boss just by tweaking a single parameter! This privilege escalation in V-SOL GPON/EPON OLT Platform v2.03 is a potential game-changer for attackers. 🔥 Think of it like a restaurant where a diner finds a loophole in the reservation system to gain access to the kitchen. By simply changing their reservation status, they can no longer just eat, but start cooking up trouble in the back! An attacker could gain full administrative access and wreak havoc on your system—changing settings, viewing sensitive data, or even locking out legitimate users. This is not just a minor inconvenience; it could lead to complete control over your network!

Put simply

Think of it like a restaurant where a diner finds a loophole in the reservation system to gain access to the kitchen. By simply changing their reservation status, they can no longer just eat, but start cooking up trouble in the back! This vulnerability arises from inadequate access controls, allowing attackers to manipulate the user role by sending a crafted HTTP POST request with 'user_role_mod' set to integer value '1', thereby gaining unauthorized administrative privileges.

What to do

An attacker could gain full administrative access and wreak havoc on your system—changing settings, viewing sensitive data, or even locking out legitimate users. This is not just a minor inconvenience; it could lead to complete control over your network! To protect your systems, patch to the latest version immediately. Ensure proper access controls are in place, particularly around user role modifications, and consider reviewing your user management processes to close any loopholes. 🛡️ You've got this! Address these steps, and you'll fortify your defenses in no time! 💪✨

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00356 · 28.1th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2025-12-24T19:27Z
EPSS history
Timeline
  • 24 DEC 19:27Z
    V-SOL GPON/EPON OLT Platform 2.03 Privilege Escalation via User Role Parameter
    cvelistv5