Is CVE-2019-25394 actively exploited?

No active exploitation of CVE-2019-25394 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-25394 be exploited remotely?

Yes. CVE-2019-25394 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-25394?

CVE-2019-25394 has a CVSS score of 7.2 (HIGH) and an EPSS exploitation probability of 0.03%.

HOME VULNERABILITIESCVE-2019-25394

HIGH

CVE-2019-25394

CWE-79Published: February 16, 2026· Updated: Feb 20, 2026

7.2

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.1th

Official 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.

NVD Source

Technical Analysis

CVE-2019-25394 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.