CVE-2026-25656CWE-427

A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3), User Management Component (UMC) (All versions < V2.15.2.1)

High · published February 10, 2026

CVSS v4.0
8.5
EPSS
0%
Percentile
9.9
In the wild
Unconfirmed
What it is

⚡ A low-privileged user can tamper with configuration files in SINEC NMS — talk about letting the fox into the henhouse! 🔥 Imagine a hotel where the front desk clerk can change the master key configuration, allowing unauthorized guests into luxury suites. That’s what’s happening here with the User Management Component (UMC) — the wrong person could slip in and take over! An attacker could load malicious DLLs, leading to arbitrary code execution with SYSTEM privileges. This means they could do anything from stealing sensitive data to taking complete control of your system — absolutely devastating!

Put simply

Imagine a hotel where the front desk clerk can change the master key configuration, allowing unauthorized guests into luxury suites. That’s what’s happening here with the User Management Component (UMC) — the wrong person could slip in and take over! This vulnerability allows low-privileged users to improperly modify configuration files, enabling them to load malicious dynamic link libraries (DLLs) and execute arbitrary code with elevated privileges.

What to do

An attacker could load malicious DLLs, leading to arbitrary code execution with SYSTEM privileges. This means they could do anything from stealing sensitive data to taking complete control of your system — absolutely devastating! Upgrade SINEC NMS to version 4.0 SP3 or later, and ensure UMC is updated to version 2.15.2.1 or above. Regularly audit user permissions and monitor for any suspicious activities. 🛡️ You've got this! With these updates, you’ll be locking down your system tighter than a vault! 🦸‍♂️

The record
Technical detail
CVSS v4.0
8.5 · HIGH
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00204 · 9.9th percentile
Weakness
CWE-427 · Uncontrolled Search Path Element
Published
2026-02-10T09:58Z
EPSS history
Timeline
  • 10 FEB 09:58Z
    A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3), User Management Component (UMC) (All versions < V2.15.2.1)
    cvelistv5