What is the CVSS score of CVE-2019-25379?

CVE-2019-25379 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Smoothwall Express are affected by CVE-2019-25379?

Smoothwall Express 3.1-SP4 contains cross-site scripting vulnerabilities that could allow attackers to inject malicious scripts through the URL filter interface, potentially compromising user…

Is there a public PoC exploit available for CVE-2019-25379?

Yes, a public proof-of-concept exploit is available for CVE-2019-25379. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2019-25379?

Within 24 hours: Identify all Smoothwall Express instances running version 3.1-SP4-polar-x86_64-update9 and restrict network access to the urlfilter.cgi endpoint to trusted administrative networks only. Within 7 days: Implement Web Application Firewall (WAF) rules to block malicious script injection patterns in urlfilter.cgi requests and monitor access logs for exploitation attempts. Within 30 days: Evaluate upgrade path to a patched Smoothwall version or replace the appliance with a supported alternative, as no patch is available for this version.

Smoothwall Express CVE-2019-25379

HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-02-16 disclosure@vulncheck.com

XSS Smoothwall Express

7.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.2 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

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

HIGH 7.2

DescriptionCVE.org

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains stored and reflected cross-site scripting vulnerabilities in the urlfilter.cgi endpoint that allow attackers to inject malicious scripts. Attackers can submit POST requests with script payloads in the REDIRECT_PAGE or CHILDREN parameters to execute arbitrary JavaScript in user browsers.

AnalysisAI

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the urlfilter.cgi component of Smoothwall Express. Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains stored and reflected cross-site scripting vulnerabilities in the urlfilter.cgi endpoint that allow attackers to inject malicious scripts. Attackers can submit POST requests with script payloads in the REDIRECT_PAGE or CHILDREN parameters to execute arbitrary JavaScript in user browsers.

RemediationAI

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

CVE-2019-25379 vulnerability details – vuln.today

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Smoothwall Express CVE-2019-25379

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code