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

> CVE-2018-19410: Paessler PRTG Network Monitor Local File Inclusion Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2018-19410
Last updated: 2025-10-21T23:45:46Z

- Published: 2018-11-21 16:00 UTC · Updated: 2025-10-21 23:45 UTC · Assigner: mitre
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 97.9%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-02-04, federal due date 2025-02-25, ransomware use: Unknown

## Description

PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator). A remote unauthenticated user can craft an HTTP request and override attributes of the 'include' directive in /public/login.htm and perform a Local File Inclusion attack, by including /api/addusers and executing it. By providing the 'id' and 'users' parameters, an unauthenticated attacker can create a user with read-write privileges (including administrator).

## CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- Paessler: PRTG Network Monitor

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-19410)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2018-19410)
- [https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2018-24/](https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2018-24/)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2018-19410 · Markdown: https://rewindex.com/cve/CVE-2018-19410.md · JSON: https://rewindex.com/api/v1/cves/CVE-2018-19410 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:47:38.080Z