CVE-2019-25394 - CVE House

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Status published Medium CVE-2019-25394

Smoothwall Express 3.1 'modem.cgi' Cross-Site Scripting

5.3 CVSS

Vulnerability Description

Smoothwall Express 3.1-SP4-polar-x86_64-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, SPEAKER_ON, SPEAKER_OFF, TONE_DIAL, and PULSE_DIAL to execute arbitrary JavaScript in users' browsers when the stored data is retrieved.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Ozer Goker

References

More from Smoothwall

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Smoothwall Express 3.1 'preferences.cgi' Cross-Site Scripting

Smoothwall Express 3.1 'smoothinfo.cgi' Cross-Site Scripting

Smoothwall Express 3.1 'iptools.cgi' Cross-Site Scripting

Smoothwall Express 3.1 'interfaces.cgi' Cross-Site Scripting

Smoothwall Express 3.1 'timedaccess.cgi' Cross-Site Scripting

Affected Vendor

Smoothwall

View all reports →

Affected Software

Smoothwall Express

Vulnerable Versions:

3.1

Timeline

Official Publish: February 16th, 2026

Last Modified: March 5th, 2026

Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement