CVE-2024-12833 Paessler PRTG Network Monitor SNMP Cross-Site Scripting Authentication Bypass Vulnerability

High 8.0 Published 11 Feb 2025 Updated 12 Feb 2025

Network-adjacent attackers can inject scripts via SNMP to bypass authentication in PRTG Network Monitor, requiring administrator interaction.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2024-12833?

CVE-2024-12833 is a high-severity cross-site scripting vulnerability in Paessler PRTG Network Monitor, published on 11 Feb 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Paessler PRTG Network Monitor SNMP Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Paessler PRTG Network Monitor. Some user interaction on the part of an administrator is required to exploit this vulnerability.

The specific flaw exists within the PRTG Network Monitor web interface. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-23371.

Weakness: CWE-79

Which versions are affected by CVE-2024-12833?

It affects 1 product.

Products include Paessler Prtg Network Monitor.

How do I fix CVE-2024-12833?

No fix has been published for CVE-2024-12833 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-12833 being exploited?

There is no known exploitation of CVE-2024-12833 in the wild and no public exploit code.

Sources

Also known as GHSA-j4w5-fp7w-rwm7.