# Paessler PRTG Network Monitor vulnerabilities

Source: https://junglewise.ai/threats/technologies/prtg-network-monitor  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/prtg-network-monitor.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 8 vulnerabilities in Paessler PRTG Network Monitor: 0 in the last 7 days and 5 in the last 90 days, 2 of them critical and 2 exploited in the wild. The most recent, CVE-2026-4638, was published on 24 September 2026. Nothing in the last four weeks, down from 5 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 5
- All time: 8 (2 critical, 2 exploited in the wild)

## About Paessler PRTG Network Monitor

PRTG Network Monitor is an agentless network monitoring software solution for monitoring system conditions and traffic.

## Latest Paessler PRTG Network Monitor vulnerabilities

- [CVE-2026-4638: Paessler PRTG Network Monitor password disclosure in demo sensor](https://junglewise.ai/threats/cve-2026-4638-prtg-network-monitor-before-version-26-2-120-1449-ships-a-demo-exe) (info, published 24 Sep 2026)
- [CVE-2026-4637: 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) (info, published 24 Sep 2026)
- [CVE-2023-28148: Paessler PRTG cross-site scripting in body class](https://junglewise.ai/threats/cve-2023-28148-paessler-prtg-cross-site-scripting-in-body-class) (high, CVSS 7.2, published 14 Sep 2026)
- [CVE-2023-22632: 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) (low, CVSS 2.7, published 14 Sep 2026)
- [CVE-2023-22631: 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) (low, CVSS 2.7, published 14 Sep 2026)
- [CVE-2018-9276: Paessler PRTG Network Monitor OS Command Injection Vulnerability](https://junglewise.ai/threats/cve-2018-9276-paessler-prtg-network-monitor-os-command-injection-vulnerability) (critical, exploited in the wild, CVSS 7.2, published 4 Feb 2025)
- [CVE-2018-19410: Paessler PRTG Network Monitor Local File Inclusion Vulnerability](https://junglewise.ai/threats/cve-2018-19410-paessler-prtg-network-monitor-local-file-inclusion-vulnerability) (critical, exploited in the wild, CVSS 9.8, published 4 Feb 2025)
- [CVE-2015-7743: Paessler PRTG Network Monitor XXE in HTTP XML/REST Value sensor](https://junglewise.ai/threats/cve-2015-7743-paessler-prtg-network-monitor-xxe-in-http-xml-rest-value-sensor) (medium, CVSS 6.5, published 23 Jan 2017)

## Most severe Paessler PRTG Network Monitor vulnerabilities

- [CVE-2018-19410: Paessler PRTG Network Monitor Local File Inclusion Vulnerability](https://junglewise.ai/threats/cve-2018-19410-paessler-prtg-network-monitor-local-file-inclusion-vulnerability) (critical, exploited in the wild, CVSS 9.8, published 4 Feb 2025)
- [CVE-2018-9276: Paessler PRTG Network Monitor OS Command Injection Vulnerability](https://junglewise.ai/threats/cve-2018-9276-paessler-prtg-network-monitor-os-command-injection-vulnerability) (critical, exploited in the wild, CVSS 7.2, published 4 Feb 2025)
- [CVE-2023-28148: Paessler PRTG cross-site scripting in body class](https://junglewise.ai/threats/cve-2023-28148-paessler-prtg-cross-site-scripting-in-body-class) (high, CVSS 7.2, published 14 Sep 2026)
- [CVE-2015-7743: Paessler PRTG Network Monitor XXE in HTTP XML/REST Value sensor](https://junglewise.ai/threats/cve-2015-7743-paessler-prtg-network-monitor-xxe-in-http-xml-rest-value-sensor) (medium, CVSS 6.5, published 23 Jan 2017)
- [CVE-2023-22632: 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) (low, CVSS 2.7, published 14 Sep 2026)
- [CVE-2023-22631: 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) (low, CVSS 2.7, published 14 Sep 2026)
- [CVE-2026-4637: 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) (info, published 24 Sep 2026)
- [CVE-2026-4638: Paessler PRTG Network Monitor password disclosure in demo sensor](https://junglewise.ai/threats/cve-2026-4638-prtg-network-monitor-before-version-26-2-120-1449-ships-a-demo-exe) (info, published 24 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 5 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 3 | 0 | 0 |
| 21 Sep 2026 | 2 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Paessler PRTG Network Monitor vulnerabilities", https://junglewise.ai/threats/technologies/prtg-network-monitor, 9 November 2026.