XSS in Paessler Prtg Network Monitor
CVE-2022-35739
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.008 (53.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.paessler.com/prtg/history/stable (Release Notes, Vendor Advisory)
- raxis.com/blog/cve-2022-35739 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-35739?
- CVE-2022-35739 is a medium-severity vulnerability in Paessler Prtg Network Monitor, classified under Cross-site Scripting. CVSS score: 5.3/10. Published 2022-10-25.
- How severe is CVE-2022-35739?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2022-35739 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.