CVE-2019-25428Public exploitNetwork attack vector

Browser script execution via unescaped OpenVPN user parameters

Published Feb 19, 2026 · Updated Feb 19, 2026

Reflected XSS in Comodo Dome Firewall 2.7.0 allows remote attackers to execute JavaScript in users' browsers via crafted POST requests. The openvpn_users endpoint reflects the username, remotenets, explicitroutes, static_ip, custom_dns, and custom_domain parameters without neutralizing script markup. Exploitation requires a user to render the resulting response, where the script can read or modify data available to that browser session.

CVSS severity6.1
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Comodo Dome Firewall 2.7.0 allows remote attackers to execute JavaScript in users' browsers via crafted POST requests. The openvpn_users endpoint reflects the username, remotenets, explicitroutes, static_ip, custom_dns, and custom_domain parameters without neutralizing script markup. Exploitation requires a user to render the resulting response, where the script can read or modify data available to that browser session.

The record

CVE
CVE-2019-25428
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
Comodo Group, Inc.
Product
Comodo Dome Firewall
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 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=2.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Comodo Group, Inc. · Comodo Dome Firewallversion=2.7.0

Published CVSS scores

5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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