What is CVE-2019-25323?

CVE-2019-25323 is a medium-severity vulnerability in Heatmiser Netmonitor, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-12.

How severe is CVE-2019-25323?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Heatmiser Netmonitor

CVE-2019-25323

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…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (12.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Heatmiser Netmonitor — versions 3.03

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2019-25323?: CVE-2019-25323 is a medium-severity vulnerability in Heatmiser Netmonitor, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-12.
How severe is CVE-2019-25323?: Medium severity. CVSS v3 base score is 6.1 out of 10.