CVE-2018-19204
PRTG Network Monitor before 18.3.44.2054 allows a remote authenticated attacker (with read-write privileges) to execute arbitrary code and OS commands with system privileges.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
PRTG Network Monitor before 18.3.44.2054 allows a remote authenticated attacker (with read-write privileges) to execute arbitrary code and OS commands with system privileges. When creating an HTTP Advanced Sensor, the user's input in the POST parameter 'proxyport_' is mishandled. The attacker can craft an HTTP request and override the 'writeresult' command-line parameter for HttpAdvancedSensor.exe to store arbitrary data in an arbitrary place on the file system. For example, the attacker can create an executable file in the \Custom Sensors\EXE directory and execute it by creating EXE/Script Sensor.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.64% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- paessler/prtg network monitor
- Source
- cve@mitre.org
EPSS 4.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://en.securitylab.ru/lab/PT-2018-23Third Party Advisory
- https://www.paessler.com/prtg/history/stable#18.3.44.2054Vendor Advisory
- https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2018-23/Third Party Advisory
- http://en.securitylab.ru/lab/PT-2018-23Third Party Advisory
- https://www.paessler.com/prtg/history/stable#18.3.44.2054Vendor Advisory
- https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2018-23/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.