Paessler PRTG Network Monitor OS Command Injection Vulnerability
n/a — n/a
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.
7.2
87.2%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Published
- Jul 2, 2018
- Modified
- Jun 17, 2026
- Added to KEV
- Feb 4, 2025
- Federal patch due
- Feb 25, 2025
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
5 foundWeaponization
Public repositories whose name or description references CVE-2018-9276, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
- wildkindcc/CVE-2018-9276★ 36
CVE-2018-9276 PRTG < 18.2.39 Authenticated Command Injection (Reverse Shell)
updated Jul 13, 2026
- alvinsmith-eroad/CVE-2018-9276★ 0
CVE-2018-9276 PRTG < 18.2.39 Reverse Shell (Python3 support)
updated Jul 29, 2021
- AC8999/PRTG-Network-Monitor-18.2.38---Authenticated-Remote-Code-Execution-CVE-2018-9276★ 0
Python Exploit for CVE: 2018-9276
updated Apr 7, 2026
- andyfeili/CVE-2018-9276★ 0
updated Jan 2, 2021
- BardLaudian/CVE-2018-9276★ 0
CVE-2018-9276 — PRTG Network Monitor < 18.2.39 Authenticated RCE. For educational purposes and authorized penetration testing only.
updated Sep 24, 2026
References
How this class of flaw gets exploited
Frequently asked questions
What is CVE-2018-9276?
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.
How severe is CVE-2018-9276?
CVE-2018-9276 has a CVSS base score of 7.2 out of 10 (CVSS 3.1).
Is CVE-2018-9276 actively exploited in the wild?
Yes. CVE-2018-9276 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Feb 4, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2018-9276?
87.2% - meaning FIRST.org's EPSS model estimates a 87.2% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2018-9276?
We found 5 public GitHub repositories referencing CVE-2018-9276, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2018-9276?
CVE-2018-9276 is classified under CWE-78 (CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')).
Cross-checked against
Impactr finds and proves whether CVE-2018-9276 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
Join the waitlist