CVE-2019-25323Public exploitNetwork attack vector

Web interface manipulation via unsanitized output title

Published Feb 12, 2026 · Updated Feb 12, 2026

HTML injection in Heatmiser Netmonitor 3.03 allows remote attackers to alter web interface content through the outputtitle parameter. The outputSetup.htm handler accepts the parameter in a crafted POST request and places its value into generated HTML without adequate neutralization. Exploitation requires access to the network web interface and user interaction with the injected content; no service interruption is reported.

CVSS severity5.1
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTML injection in Heatmiser Netmonitor 3.03 allows remote attackers to alter web interface content through the outputtitle parameter. The outputSetup.htm handler accepts the parameter in a crafted POST request and places its value into generated HTML without adequate neutralization. Exploitation requires access to the network web interface and user interaction with the injected content; no service interruption is reported.

The record

CVE
CVE-2019-25323
Published
Feb 12, 2026
Updated
Feb 12, 2026
Vendor
Heatmiser
Product
Netmonitor
Classifications
CWE-79
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.03

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Heatmiser · Netmonitorversion=3.03

Published CVSS scores

5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
6.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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