The current version of PRTG Network Monitor is 26.3.124.1727 (as of 16/09/2026). patchletter checks the official source daily and emails you new releases.
Actively exploited vulnerabilities
The US cybersecurity agency CISA lists these vulnerabilities in its catalog of Known Exploited Vulnerabilities. What CISA does not carry does not appear in this list — even where it is being exploited.
- CVE-2018-19410Paessler PRTG Network Monitor Local File Inclusion Vulnerability
9.8 critical · over the network, without login · CISA deadline was 25 Feb 25
- CVE-2018-9276Paessler PRTG Network Monitor OS Command Injection Vulnerability
7.2 high · over the network, with admin rights only · CISA deadline was 25 Feb 25
Source: CISA KEV. The CVE is matched to the product automatically — when in doubt, the linked NVD entry applies.
BSI security advisories
Advisories the German BSI (CERT-Bund) published for this product. Whether your version is affected is stated in the advisory itself.
- Paessler PRTG: Mehrere Schwachstellen
WID-SEC-W-2026-3565 · 25 Sept
- Paessler PRTG: Schwachstelle ermöglicht Offenlegung von Informationen
WID-SEC-W-2023-2660 · 14 Sept
- Paessler PRTG: Mehrere Schwachstellen
WID-SEC-W-2023-1887 · 14 Sept
PRTG Network Monitor at a glance
PRTG Network Monitor (from Paessler) is a widely used, sensor-based monitoring tool for networks and systems, popular in SMBs. Paessler ships regular releases across stable and preview channels; as a monitoring system with broad visibility and credentials, it deserves hardening and timely updates.
For admins updates run through the built-in mechanism; take a configuration backup first. PRTG holds credentials to the monitored systems (SNMP, WMI, logins), so keep the web interface off the open internet and behind authentication. New versions bring sensor types and fixes. After updating, verify that sensors and notifications still work — silent alerting failures are worse than a visible outage. Watch the version and its support status, and mind the sensor-count licensing when planning growth.
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 26.3.124.1727 | STABLE | 16/09/2026 | Release notes → |
| 26.3.122.1665 | STABLE | 23/07/2026 | Release notes → |
| 26.2.120.1477 | STABLE | 08/07/2026 | Release notes → |
| 26.2.120.1449 | STABLE | 08/07/2026 | Release notes → |
| 26.2.120 | STABLE | 08/07/2026 | Release notes → |
| 26.1.118.1380 | STABLE | 08/07/2026 | Release notes → |
| 26.1.118 | STABLE | 08/07/2026 | Release notes → |
Frequently asked questions
- What is the latest version of PRTG Network Monitor?
- PRTG Network Monitor 26.3.124.1727, released 16/09/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the PRTG Network Monitor release notes?
- The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
- How do I get notified about new PRTG Network Monitor updates?
- Tick PRTG Network Monitor off in the catalogue and leave your address. From then on new versions go out by email — one at a time, or bundled in the daily or weekly digest.
An email as soon as a new PRTG Network Monitor version ships
We reconcile the vendor source daily. When a new version appears, it lands in your inbox right away or bundled as a digest. The update email is free and ends with one click. Alerts about vulnerabilities and end of support are part of patchletter Pro.
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[](https://patchletter.com/en/software/prtg)https://patchletter.com/badge/prtg.svgAlso available: ?v=eol (end of support) and ?v=cve (actively exploited).
