How to fix CVE-2019-25389?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Is Smoothwall Express affected by CVE-2019-25389?

Organizations using Smoothwall Express 3.1-SP4-polar-x86_64-update9 should be aware of moderate risk from CVE-2019-25389, a cross-site scripting vulnerability rated CVSS 6.1. Attackers could inject scripts to steal sessions or perform actions as authenticated users.

CVE-2019-25389

MEDIUM

2026-02-16 [email protected]

6.1

CVSS 3.1

CVSS Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 20, 2026 - 16:30 vuln.today

Public exploit code

CVE Published

Feb 16, 2026 - 18:19 nvd

MEDIUM 6.1

Description

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating the MACHINES parameter. Attackers can craft requests to the timedaccess.cgi endpoint with script payloads in the MACHINES parameter to execute arbitrary JavaScript in users' browsers.

Analysis

Technical Context

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the MACHINES component of Smoothwall Express. Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating the MACHINES parameter. Attackers can craft requests to the timedaccess.cgi endpoint with script payloads in the MACHINES parameter to execute arbitrary JavaScript in users' browsers.

Affected Products

Vendor: Smoothwall. Product: Smoothwall Express. Versions: up to 3.1. Component: MACHINES.

Remediation

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.1

CVSS: +30

POC: +20

CVE-2019-25389 vulnerability details – vuln.today

Back

CVE-2019-25389

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Share

CVE-2019-25389

CVSS Vector

Lifecycle Timeline

Tags

Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

Share

External POC / Exploit Code