CVE-2019-25394

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.

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-02-16 18:19 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:32 UTC Last updatedMost recent change to the record

Details

Published

2026-02-16 18:19 UTC

Last modified

2026-06-17 02:32 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-79 · Cross-site scripting

Record status

Analyzed

Affected

• Smoothwall Express 3.1

Attack profile CVSS 4.0 · 5.3

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

Passive

Confidentiality

Low

Integrity

Low

Availability

None