Prtg Network Monitor
CVE-2018-9276
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK
2 techniques across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.2 (HIGH). Attack characteristics: network attack vector, low complexity, high privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could execute arbitrary operating system commands on the host by sending crafted requests to the affected application. |
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Alert meAnalysisAI
An issue was discovered in PRTG Network Monitor before 18.2.39. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. 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. Affected products include: Paessler Prtg Network Monitor. Version information: before 18.2.39..
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
CISA KEV
EPSS
Exploit-DB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
Affected Products (CPE)NVD
More in Prtg Network Monitor
View allA command injection vulnerability was identified in PRTG 23.2.84.1566 and earlier versions in the HL7 sensor where an au
PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privile
Paessler PRTG Network Monitor before 18.1.39.1648 mishandles stack memory during unspecified API calls. Rated high sever
XML external entity vulnerability in PRTG Network Monitor before 16.2.23.3077/3078 allows remote authenticated users to
PRTG Network Monitor version 17.3.33.2830 is vulnerable to reflected Cross-Site Scripting on error.htm (the error page),
PRTG Network Monitor v7.1.3.3378 allows XSS via the /public/login.htm errormsg or loginurl parameter. Rated medium sever
A webserver component in Paessler PRTG Network Monitor 19.2.50 to PRTG 20.1.56 allows unauthenticated remote command exe
PRTG Network Monitor version 17.3.33.2830 is vulnerable to stored Cross-Site Scripting on all group names created, relat
PRTG Network Monitor before 21.3.69.1333 allows stored XSS via an unsanitized string imported from a User Object in a co
XSS exists in PRTG Network Monitor 20.1.56.1574 via crafted map properties. Rated medium severity (CVSS 5.4), this vulne
PRTG Network Monitor through 22.2.77.2204 does not prevent custom input for a device’s icon, which can be modified to in
PRTG Network Monitor before 20.1.57.1745 allows remote unauthenticated attackers to obtain information about probes runn
GitHub PoC