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Paessler PRTG Network Monitor Denial-of-Service Vulnerability

Vulnerability

A denial-of-service vulnerability has been identified in Paessler PRTG Network Monitor versions prior to 25.4.114. An authenticated attacker can disrupt service by exploiting the Notification Contacts functionality, potentially impairing the page's functionality with invalid values.

Impact

Exploitation of this vulnerability leads to a service disruption on the Notification Contacts page.

Remediation

Users can upgrade to PRTG version 25.4.114.1032, released on November 26, 2025, to address this vulnerability.

Added: Jan 14, 2026, 5:33 PM
Updated: Jan 14, 2026, 9:22 PM

Vulnerability Rating

Custom Algorithm
spread
5.7
impact
0.6
exploitability
4.9
remediation
7.7
relevance
2.1
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.