CVE-2018-19410KEV · OVERDUE

Paessler PRTG Network Monitor Local File Inclusion Vulnerability

Critical · published November 21, 2018

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.

605
days past CISA
deadline
CVSS v3.1
9.8
EPSS
98%
Percentile
99.9
In the wild
Confirmed
What it is

🚨 A single HTTP request is all it takes for an attacker to gain full control over your PRTG Network Monitor! 🔥 Think of it like a hotel where anyone can just walk up to the front desk and check in as the owner. With this vulnerability, attackers can create users with read-write privileges, including administrator access, as easily as flipping a switch. This means an attacker could gain complete control over your network monitoring setup, allowing them to manipulate settings, access sensitive data, or even shut down monitoring entirely. The consequences could be absolutely devastating for your organization's security and operational integrity!

Put simply

Think of it like a hotel where anyone can just walk up to the front desk and check in as the owner. With this vulnerability, attackers can create users with read-write privileges, including administrator access, as easily as flipping a switch. This vulnerability allows an unauthenticated remote attacker to craft a malicious HTTP request that creates a user with elevated privileges by exploiting the 'include' directive in /public/login.htm, leading to Local File Inclusion (LFI).

What to do

This means an attacker could gain complete control over your network monitoring setup, allowing them to manipulate settings, access sensitive data, or even shut down monitoring entirely. The consequences could be absolutely devastating for your organization's security and operational integrity! Immediate action is crucial! Upgrade your PRTG Network Monitor to version 18.2.40.1684 or later to close this security hole. Additionally, review user access controls and consider implementing network segmentation to limit exposure. You've got this! With these steps, you'll fortify your defenses in no time. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.97939 · 99.9th percentile
Published
2018-11-21T16:00Z
KEV added
2025-02-04 · due 2025-02-25
EPSS history
Timeline
  • 24 AUG 23:25Z
    EPSS moved 87% → 98%
    epss
  • 04 FEB 00:00Z
    Added to CISA KEV — remediate by Feb 25
    kev
  • 21 NOV 16:00Z
    PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator)
    cvelistv5