Heatmiser Netmonitor v3.03 contains an HTML injection vulnerability in the outputSetup.htm page that allows attackers to inject malicious HTML code through the outputtitle parameter. Attackers can craft specially formatted POST requests to the outputtitle parameter to execute arbitrary HTML and potentially manipulate the web interface's displayed content.
https://www.zoneregeling.nl/heatmiser/netmonitor-handleiding.pdf
https://www.vulncheck.com/advisories/heatmiser-netmonitor-html-injection
https://www.exploit-db.com/exploits/47828
https://web.archive.org/web/20190724160628/https://www.heatmiser.com/en/
Published: 2026-02-12
Updated: 2026-02-13
Base Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Severity: Medium
Base Score: 5.1
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Severity: Medium
EPSS: 0.0003