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Vulnerability record · CVE-2022-35739 · published 25 October 2022

CVE-2022-35739: Paessler prtg network monitor cross-site scripting vulnerability

Paessler · Prtg Network Monitor

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.

5.3 CVSS 3.1 Medium EPSS 0.79% · top 45.0% CWE-79 · Cross-site scripting
5.3CVSS 3.1 base score
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://raxis.com/blog/cve-2022-35739 ExploitThird Party Advisory
https://www.paessler.com/prtg/history/stable Release NotesVendor Advisory
https://raxis.com/blog/cve-2022-35739 ExploitThird Party Advisory
https://www.paessler.com/prtg/history/stable Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-19410PRTG Network Monitor unauthenticated local file inclusion enables admin user creationPRTG Network Monitor before 18.2.40.1683 lets an unauthenticated remote attacker abuse the 'include' directive in /public/login.htm to perform local …KEVEPSS 98%analysed7.2CVE-2018-9276PRTG Network Monitor OS Command Injection via Malformed ParametersPRTG Network Monitor before 18.2.39 contains an OS command injection flaw (CWE-78) reachable through malformed parameters in sensor or notification m…KEVEPSS 87%analysed9.8CVE-2020-10374Paessler prtg network monitor improper input validation vulnerabilityA webserver component in Paessler PRTG Network Monitor 19.2.50 to PRTG 20.1.56 allows unauthenticated remote command execution via a crafted POST req…EPSS 4.7%8.8CVE-2023-31452Paessler prtg network monitor cross-site request forgery vulnerabilityA cross-site request forgery (CSRF) token bypass was identified in PRTG 23.2.84.1566 and earlier versions that allows remote attackers to perform act…EPSS 0.65%8.8CVE-2018-19411Paessler prtg network monitor improper privilege management vulnerabilityPRTG 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 (incl…EPSS 0.87%8.8CVE-2018-19204Paessler prtg network monitor improper input validation vulnerabilityPRTG Network Monitor before 18.3.44.2054 allows a remote authenticated attacker (with read-write privileges) to execute arbitrary code and OS command…EPSS 4.6%7.5CVE-2018-19203Paessler prtg network monitor vulnerabilityPRTG Network Monitor before 18.2.41.1652 allows remote unauthenticated attackers to terminate the PRTG Core Server Service via a special HTTP request.EPSS 2.8%7.5CVE-2018-10253Paessler prtg network monitor memory buffer overflow vulnerabilityPaessler PRTG Network Monitor before 18.1.39.1648 mishandles stack memory during unspecified API calls.EPSS 7.2%

Source: NIST National Vulnerability Database (record CVE-2022-35739), CISA KEV, FIRST EPSS (scores of 2026-10-11). This page is refreshed as NVD updates the record.