CVE-2018-9276

HIGH KEV

PRTG Network Monitor < 18.2.39 - Authenticated OS Command Injection via Sensor or Notification Parameters

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2018-9276 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added February 4, 2025. EIP tracks 9 public exploits from researchers including M4LV0, wildkindcc, BardLaudian, including a Metasploit module exploits/windows/http/prtg_authenticated_rce.

AI-analyzed exploit summary This exploit leverages an authenticated RCE vulnerability in PRTG Network Monitor by creating malicious notifications that execute arbitrary commands via crafted file writes and PowerShell execution. It adds a new admin user 'pentest' with a known password.

Description

An issue was discovered in PRTG Network Monitor before 18.2.39. An attacker who has access to the PRTG System Administrator web console with administrative privileges can exploit an OS command injection vulnerability (both on the server and on devices) by sending malformed parameters in sensor or notification management scenarios.

Exploits (9)

exploitdb WORKING POC
by M4LV0 · bashwebappswindows
https://www.exploit-db.com/exploits/46527

This exploit leverages an authenticated RCE vulnerability in PRTG Network Monitor by creating malicious notifications that execute arbitrary commands via crafted file writes and PowerShell execution. It adds a new admin user 'pentest' with a known password.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor 18.2.38
Auth required
Prerequisites: Valid PRTG credentials · Access to the PRTG web interface · Cookie session for authenticated requests
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 36 stars
by wildkindcc · remote
https://github.com/wildkindcc/CVE-2018-9276

This is a Python-based exploit for CVE-2018-9276, an authenticated command injection vulnerability in PRTG Network Monitor versions prior to 18.2.39. The exploit automates the process of obtaining a session, creating a malicious file, and executing a reverse shell payload.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor < 18.2.39
Auth required
Prerequisites: Valid administrator credentials for PRTG · Network access to the PRTG server · Python environment with required dependencies
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by BardLaudian · remote-auth
https://github.com/BardLaudian/CVE_2018_9276

This repository contains a functional Python exploit for CVE-2018-9276, targeting PRTG Network Monitor versions prior to 18.2.39. The exploit leverages authenticated command injection via the notifications feature to achieve remote code execution as Local System.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor < 18.2.39
Auth required
Prerequisites: Valid PRTG credentials · Network access to target
devstral-2 · analyzed Jun 14, 2026 Full analysis →
nomisec WORKING POC
by AC8999 · remote-auth
https://github.com/AC8999/PRTG-Network-Monitor-18.2.38---Authenticated-Remote-Code-Execution-CVE-2018-9276

This repository contains a functional Python exploit for CVE-2018-9276, an authenticated remote code execution vulnerability in PRTG Network Monitor 18.2.38. The exploit leverages an unsanitized 'message_10' parameter in the notification system to inject and execute arbitrary commands via a crafted EXE/Script notification.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor 18.2.38
Auth required
Prerequisites: valid PRTG admin credentials · network access to the PRTG instance
devstral-2 · analyzed Apr 10, 2026 Full analysis →
nomisec WORKING POC
by alvinsmith-eroad · remote
https://github.com/alvinsmith-eroad/CVE-2018-9276

This repository contains a Python3 exploit for CVE-2018-9276, an authenticated command injection vulnerability in PRTG Network Monitor versions prior to 18.2.39. The exploit leverages Impacket for SMB operations and establishes a reverse shell via crafted notifications.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor < 18.2.39
Auth required
Prerequisites: Valid PRTG credentials (default: prtgadmin:prtgadmin) · Network access to target PRTG server · SMB port (445) accessible for reverse shell
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by andyfeili · poc
https://github.com/andyfeili/CVE-2018-9276

This script exploits an authenticated RCE vulnerability in PRTG Network Monitor by creating malicious notifications that execute arbitrary commands via file creation and user addition. It leverages the notification system to trigger payload execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor 18.2.38
Auth required
Prerequisites: Valid PRTG credentials · Session cookie for authenticated requests
devstral-2 · analyzed Feb 16, 2026 Full analysis →
vulncheck_xdb WORKING POC
remote-auth
https://github.com/backglass/exploit_prtg

This repository contains a functional Python exploit for CVE-2018-9276, a command injection vulnerability in PRTG Network Monitor. The exploit leverages the `message_10` parameter in a POST request to execute arbitrary commands, specifically adding a new user with administrative privileges.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor (versions affected by CVE-2018-9276)
Auth required
Prerequisites: Valid credentials for PRTG admin account · Network access to the PRTG server
devstral-2 · analyzed Feb 25, 2026 Full analysis →
inthewild WORKING POC
poc
https://github.com/a1vinsmith/cve-2018-9276

This repository contains a functional Python3 exploit for CVE-2018-9276, an authenticated command injection vulnerability in PRTG Network Monitor versions prior to 18.2.39. The exploit leverages Impacket for SMB operations and establishes a reverse shell via crafted HTTP requests to the PRTG API.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor < 18.2.39
Auth required
Prerequisites: valid PRTG credentials (default: prtgadmin:prtgadmin) · network access to target · Impacket library · netcat/msfvenom for payload generation
devstral-2 · analyzed Feb 23, 2026 Full analysis →
metasploit WORKING POC EXCELLENT
rubypocwin
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/prtg_authenticated_rce.rb

This Metasploit module exploits an authenticated RCE vulnerability in PRTG Network Monitor by creating and triggering a malicious notification with a PowerShell payload. The exploit chains poorly validated input in the script name to execute arbitrary commands under a privileged context.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: PRTG Network Monitor versions prior to 18.2.39
Auth required
Prerequisites: Valid PRTG admin credentials · Network access to the PRTG web interface
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Exploit, Mitigation, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/148334/PRTG-Command-Injection.html
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/46527/
Broken Link, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/542103/100/0/threaded

Scores

CVSS v3 7.2
EPSS 0.8795
EPSS Percentile 99.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2025-02-04
VulnCheck KEV 2025-02-04
ENISA EUVD EUVD-2018-20870
CWE
CWE-78
Status published
Products (1)
paessler/prtg_network_monitor < 18.2.39
Published Jul 02, 2018
KEV Added Feb 04, 2025
Tracked Since Feb 18, 2026