CVE-2019-25394: Smoothwall Express 3.1 'modem.cgi' Cross-Site Scripting

Published Feb 16, 2026
·
Updated

Smoothwall Express 3.1-SP4-polar-x8664-update9 contains multiple stored cross-site scripting vulnerabilities in the modem.cgi script that allow attackers to inject malicious scripts through POST parameters. Attackers can submit crafted payloads in parameters like INIT, HANGUP, SPEAKERON, SPEAKEROFF, TONEDIAL, and PULSEDIAL to execute arbitrary JavaScript in users' browsers when the stored data is retrieved.

Affected Software

2 affected components
Smoothwall Smoothwall Express
Smoothwall Smoothwall Express=3.1-sp4

Event History

Feb 16, 2026
CVE Published
via MITRE·05:05 PM
Data Sourced
via MITRE·05:05 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·06:19 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2019-25394?

CVE-2019-25394 has been classified as a medium severity vulnerability.

2

What types of attacks can be executed through CVE-2019-25394?

CVE-2019-25394 allows attackers to execute stored cross-site scripting (XSS) attacks via the modem.cgi script.

3

How do I fix CVE-2019-25394?

To fix CVE-2019-25394, it is recommended to update Smoothwall Express to a patched version that addresses the XSS vulnerabilities.

4

Which versions of Smoothwall Express are affected by CVE-2019-25394?

CVE-2019-25394 affects Smoothwall Express 3.1-SP4-polar-x86_64-update9 and earlier versions.

5

What is the main component vulnerable in CVE-2019-25394?

The main component vulnerable in CVE-2019-25394 is the modem.cgi script in Smoothwall Express.

Contact

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