What’s Vulnerable › Vulnerabilities

CVE-2019-25323: Heatmiser Netmonitor 3.03 - HTML Injection

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-12 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• Heatmiser Netmonitor: 3.03

References

• https://web.archive.org/web/20190724160628/https://www.heatmiser.com/en/
• https://www.exploit-db.com/exploits/47828
• https://www.vulncheck.com/advisories/heatmiser-netmonitor-html-injection
• https://www.zoneregeling.nl/heatmiser/netmonitor-handleiding.pdf

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