Prtg Network Monitor
CVE-2021-29643
MEDIUM
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
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. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Paessler Prtg Network Monitor. Version information: before 21.3.69.1333.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
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
An issue was discovered in PRTG Network Monitor before 18.2.39. Rated high severity (CVSS 7.2), this vulnerability is re
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
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
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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