Paessler PRTG Network Monitor before 25.4.114 allows Denial-of-Service (DoS) by an authenticated attacker via the Notification Contacts functionality.
CVSS
6.5
MEDIUM
Published
Jan 14, 2026
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Showing 1-41 of 41 vulnerabilities.
Paessler PRTG Network Monitor before 25.4.114 allows Denial-of-Service (DoS) by an authenticated attacker via the Notification Contacts functionality.
CVSS
6.5
MEDIUM
Published
Jan 14, 2026
Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the filter parameter.
CVSS
5.4
MEDIUM
Published
Jan 14, 2026
Paessler PRTG Network Monitor before 25.4.114 allows XSS by an unauthenticated attacker via the tag parameter.
CVSS
6.1
MEDIUM
Published
Jan 14, 2026
Paessler PRTG Network Monitor SNMP Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Paessler PRTG Network Monitor. Some user interaction on the part of an administrator is required to exploit this vulnerability. The specific flaw exists within the PRTG Network Monitor web interface. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-23371.
CVSS
6.1
MEDIUM
Published
Feb 11, 2025
Paessler PRTG Network Monitor Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Paessler PRTG Network Monitor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the web console. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to bypass authentication on the system. . Was ZDI-CAN-21182.
CVSS
6.1
MEDIUM
Published
Feb 8, 2024
A command injection was identified in PRTG 23.2.84.1566 and earlier versions in the Dicom C-ECHO sensor where an authenticated user with write permissions could abuse the debug option to write new files that could potentially get executed by the EXE/Script sensor. The severity of this vulnerability is high and received a score of 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS
7.2
HIGH
Published
Aug 9, 2023
A command injection vulnerability was identified in PRTG 23.2.84.1566 and earlier versions in the HL7 sensor where an authenticated user with write permissions could abuse the debug option to write new files that could potentially get executed by the EXE/Script sensor. The severity of this vulnerability is high and received a score of 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS
7.2
HIGH
Published
Aug 9, 2023
A cross-site request forgery (CSRF) token bypass was identified in PRTG 23.2.84.1566 and earlier versions that allows remote attackers to perform actions with the permissions of a victim user, provided the victim user has an active session and is induced to trigger the malicious request. This could force PRTG to execute different actions, such as creating new users. The severity of this vulnerability is high and received a score of 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS
8.8
HIGH
Published
Aug 9, 2023
A path traversal vulnerability was identified in the SQL v2 sensors in PRTG 23.2.84.1566 and earlier versions where an authenticated user with write permissions could trick the SQL v2 sensors into behaving differently for existing files and non-existing files. This made it possible to traverse paths, allowing the sensor to execute files outside the designated custom sensors folder. The severity of this vulnerability is medium and received a score of 4.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CVSS
4.7
MEDIUM
Published
Aug 9, 2023
A path traversal vulnerability was identified in the WMI Custom sensor in PRTG 23.2.84.1566 and earlier versions where an authenticated user with write permissions could trick the WMI Custom sensor into behaving differently for existing files and non-existing files. This made it possible to traverse paths, allowing the sensor to execute files outside the designated custom sensors folder. The severity of this vulnerability is medium and received a score of 4.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CVSS
4.7
MEDIUM
Published
Aug 9, 2023
A path traversal vulnerability was identified in the HL7 sensor in PRTG 23.2.84.1566 and earlier versions where an authenticated user with write permissions could trick the HL7 sensor into behaving differently for existing files and non-existing files. This made it possible to traverse paths, allowing the sensor to execute files outside the designated custom sensors folder. The severity of this vulnerability is medium and received a score of 4.7 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CVSS
4.7
MEDIUM
Published
Aug 9, 2023
PRTG Network Monitor through 22.2.77.2204 does not prevent custom input for a device’s icon, which can be modified to insert arbitrary content into the style tag for that device. When the device page loads, the arbitrary Cascading Style Sheets (CSS) data is inserted into the style tag, loading malicious content. Due to PRTG Network Monitor preventing “characters, and from modern browsers disabling JavaScript support in style tags, this vulnerability could not be escalated into a Cross-Site Scripting vulnerability.
CVSS
5.3
MEDIUM
Published
Oct 25, 2022
PRTG Network Monitor before 21.3.69.1333 allows stored XSS via an unsanitized string imported from a User Object in a connected Active Directory instance.
CVSS
5.4
MEDIUM
Published
Sep 13, 2021
PRTG Network Monitor 20.1.55.1775 allows /editsettings CSRF for user account creation.
CVSS
4.3
MEDIUM
Published
Jun 10, 2021
An issue was discovered in PRTG Network Monitor before 21.1.66.1623. By invoking the screenshot functionality with prepared context paths, an attacker is able to verify the existence of certain files on the filesystem of the PRTG's Web server.
CVSS
5.3
MEDIUM
Published
Mar 31, 2021
XSS exists in PRTG Network Monitor 20.1.56.1574 via crafted map properties. An attacker with Read/Write privileges can create a map, and then use the Map Designer Properties screen to insert JavaScript code. This can be exploited against any user with View Maps or Edit Maps access.
CVSS
5.4
MEDIUM
Published
Jun 23, 2020
PRTG Network Monitor before 20.1.57.1745 allows remote unauthenticated attackers to obtain information about probes running or the server itself (CPU usage, memory, Windows version, and internal statistics) via an HTTP request, as demonstrated by type=probes to login.htm or index.htm.
CVSS
5.3
MEDIUM
Published
Apr 5, 2020
A webserver component in Paessler PRTG Network Monitor 19.2.50 to PRTG 20.1.56 allows unauthenticated remote command execution via a crafted POST request or the what parameter of the screenshot function in the Contact Support form.
CVSS
9.8
CRITICAL
Published
Mar 30, 2020
A Write to Arbitrary Location in Disk vulnerability exists in PRTG Network Monitor 19.1.49 and below that allows attackers to place files in arbitrary locations with SYSTEM privileges (although not controlling the contents of such files) due to insufficient sanitisation when passing arguments to the phantomjs.exe binary. In order to exploit the vulnerability, remote authenticated administrators need to create a new HTTP Full Web Page Sensor and set specific settings when executing the sensor.
CVSS
7.2
HIGH
Published
Mar 17, 2020
A Remote Code Execution vulnerability exists in PRTG Network Monitor before 19.4.54.1506 that allows attackers to execute code due to insufficient sanitization when passing arguments to the HttpTransactionSensor.exe binary. In order to exploit the vulnerability, remote authenticated administrators need to create a new HTTP Transaction Sensor and set specific settings when the sensor is executed.
CVSS
7.2
HIGH
Published
Mar 16, 2020
An issue was discovered in PRTG 7.x through 19.4.53. Due to insufficient access control on local registry keys for the Core Server Service, a non-administrative user on the local machine is able to access administrative credentials.
CVSS
5.5
MEDIUM
Published
Feb 3, 2020
PRTG Network Monitor v7.1.3.3378 allows XSS via the /search.htm searchtext parameter. NOTE: This product is discontinued.
CVSS
6.1
MEDIUM
Published
Dec 31, 2019
PRTG Network Monitor v7.1.3.3378 allows XSS via the /public/login.htm errormsg or loginurl parameter. NOTE: This product is discontinued.
CVSS
6.1
MEDIUM
Published
Dec 31, 2019
PRTG before 19.1.49.1966 has Cross Site Scripting (XSS) in the WEBGUI.
CVSS
6.1
MEDIUM
Published
Apr 10, 2019
PRTG Network Monitor before 18.2.40.1683 allows an authenticated user with a read-only account to create another user with a read-write account (including administrator) via an HTTP request because /api/addusers doesn't check, or doesn't properly check, user rights.
CVSS
8.8
HIGH
Published
Nov 21, 2018
PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator). A remote unauthenticated user can craft an HTTP request and override attributes of the 'include' directive in /public/login.htm and perform a Local File Inclusion attack, by including /api/addusers and executing it. By providing the 'id' and 'users' parameters, an unauthenticated attacker can create a user with read-write privileges (including administrator).
CVSS
9.8
CRITICAL
Published
Nov 21, 2018
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
8.8
HIGH
Published
Nov 12, 2018
PRTG Network Monitor before 18.2.41.1652 allows remote unauthenticated attackers to terminate the PRTG Core Server Service via a special HTTP request.
CVSS
7.5
HIGH
Published
Nov 12, 2018
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
7.2
HIGH
Published
Jul 2, 2018
Paessler PRTG Network Monitor before 18.1.39.1648 mishandles stack memory during unspecified API calls.
CVSS
7.5
HIGH
Published
Apr 21, 2018
In Paessler PRTG Network Monitor 17.3.33.2830, it's possible to create a Map as a read-only user, by forging a request and sending it to the server.
CVSS
6.5
MEDIUM
Published
Oct 26, 2017
PRTG Network Monitor 17.3.33.2830 allows remote authenticated administrators to execute arbitrary code by uploading a .exe file and then proceeding in spite of the error message.
CVSS
6.7
MEDIUM
Published
Oct 20, 2017
PRTG Network Monitor version 17.3.33.2830 is vulnerable to stored Cross-Site Scripting on all group names created, related to incorrect error handling for an HTML encoded script.
CVSS
5.4
MEDIUM
Published
Oct 15, 2017
PRTG Network Monitor version 17.3.33.2830 is vulnerable to reflected Cross-Site Scripting on error.htm (the error page), via the errormsg parameter.
CVSS
6.1
MEDIUM
Published
Oct 4, 2017
PRTG Network Monitor version 17.3.33.2830 is vulnerable to stored Cross-Site Scripting on all sensor titles, related to incorrect error handling for a %00 in the SRC attribute of an IMG element.
CVSS
4.8
MEDIUM
Published
Oct 4, 2017
Cross-site scripting (XSS-STORED) vulnerability in the DEVICES OR SENSORS functionality in Paessler PRTG Network Monitor before 17.3.33.2654 allows authenticated remote attackers to inject arbitrary web script or HTML.
CVSS
5.4
MEDIUM
Published
Aug 24, 2017
Cross-site scripting (XSS) vulnerability in Paessler PRTG Network Monitor before 17.2.32.2279 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
CVSS
6.1
MEDIUM
Published
Aug 18, 2017
Paessler PRTG before 16.2.24.4045 has XSS via SNMP.
CVSS
6.1
MEDIUM
Published
Apr 10, 2017
XML external entity vulnerability in PRTG Network Monitor before 16.2.23.3077/3078 allows remote authenticated users to read arbitrary files by creating a new HTTP XML/REST Value sensor that accesses a crafted XML file.
CVSS
6.5
MEDIUM
Published
Jan 23, 2017
Cross-site scripting (XSS) vulnerability in the Monitor_Bandwidth function in PRTG Traffic Grapher 6.2.2.977 and earlier allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
CVSS
4.3
UNKNOWN
Published
Jun 1, 2009
Paessler IPCheck Server Monitor before 5.3.3.639/640 does not properly implement a "list of acceptable host IP addresses in the probe settings," which has unknown impact and attack vectors.
CVSS
10.0
UNKNOWN
Published
Aug 31, 2006