CVE-2019-25394

HIGH 7.2

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

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	smoothwall
Product	smoothwall express
Published	Feb 16, 2026
Last Updated	Mar 5, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Smoothwall / Smoothwall Express

3.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/46333 smoothwall.org: http://www.smoothwall.org vulncheck.com: https://www.vulncheck.com/advisories/smoothwall-express-modemcgi-cross-site-scripting

Credits

Ozer Goker