# CVE-2018-19410: Paessler PRTG Network Monitor Local File Inclusion Vulnerability

Source: https://junglewise.ai/threats/cve-2018-19410-paessler-prtg-network-monitor-local-file-inclusion-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-02-04. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2018-19410 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2025-02-04

Paessler PRTG Network Monitor contains a local file inclusion (LFI) vulnerability in the 'include' directive of /public/login.htm. A remote, unauthenticated attacker can exploit this by including /api/addusers to create new user accounts with read-write or administrator privileges.

Technologies: [Paessler PRTG Network Monitor](https://junglewise.ai/threats/technologies/prtg-network-monitor). Vendors: [Paessler](https://junglewise.ai/threats/vendors/paessler).

## Quick answers

**Is CVE-2018-19410 exploited in the wild?** Yes. CVE-2018-19410 is known to be exploited in the wild, first recorded on 4 February 2025. Treat it as urgent.

**How severe is CVE-2018-19410?** Critical severity, with a CVSS score of 9.8, published 4 February 2025.

**Which products and versions are affected?** Paessler PRTG Network Monitor before 18.2.40.1683.

**Is there a fix for CVE-2018-19410?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2018-19410 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2018-19410?** Check whether you run Paessler PRTG Network Monitor. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Paessler PRTG Network Monitor before 18.2.40.1683

## Timeline

- 2018-11-21: disclosed: NVD Published Date
- 2025-02-04: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

## Related threats

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- [Paessler PRTG Network Monitor reflected XSS in error responses](https://junglewise.ai/threats/cve-2026-4637-paessler-prtg-network-monitor-before-version-26-2-120-1449-is)
- [Paessler PRTG cross-site scripting in body class](https://junglewise.ai/threats/cve-2023-28148-paessler-prtg-cross-site-scripting-in-body-class)
- [Paessler PRTG Network Monitor arbitrary file write via FTP Server Count Sensor](https://junglewise.ai/threats/cve-2023-22632-paessler-prtg-network-monitor-arbitrary-file-write-via-ftp-server)
- [Paessler PRTG Network Monitor arbitrary file write in HTTP XML/REST Sensor](https://junglewise.ai/threats/cve-2023-22631-paessler-prtg-network-monitor-arbitrary-file-write-in-http-xml)