CVE-2019-25394CWE-79

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

Medium · published February 16, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
17.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
EPSS
0.00266 · 17.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-02-16T17:05Z
EPSS history
Timeline
  • 16 FEB 17:05Z
    Smoothwall Express 3.1 'modem.cgi' Cross-Site Scripting
    cvelistv5