CVE-2018-9276
Paessler PRTG Network Monitor OS Command Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 25 February 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 87.00% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 11 March 2019
- CISA KEV
- Listed 4 February 2025 · due 25 February 2025
- Weakness
- CWE-78
- Affected
- paessler/prtg network monitor
- Source
- cve@mitre.org
EPSS 87.0% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://www.paessler.com/prtg/history/prtg-18#18.2.39 ; https://nvd.nist.gov/vuln/detail/CVE-2018-9276
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/148334/PRTG-Command-Injection.htmlExploit, Mitigation, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/161183/PRTG-Network-Monitor-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/archive/1/542103/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46527/Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/148334/PRTG-Command-Injection.htmlExploit, Mitigation, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/161183/PRTG-Network-Monitor-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/archive/1/542103/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/46527/Exploit, Third Party Advisory, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-9276US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.