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CVE-2019-25395

Smoothwall Express cross-site scripting (XSS)

7.2 HIGHPublic exploitEPSS 0.24%
  1. Published16 Feb 2026

Description

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains multiple stored cross-site scripting vulnerabilities in the preferences.cgi script that allow attackers to inject malicious scripts through the HOSTNAME, KEYMAP, and OPENNESS parameters. Attackers can submit POST requests with script payloads to preferences.cgi to store malicious code that executes in the browsers of users accessing the preferences page.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected products

Smoothwall Express3.1

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2019-25395 being actively exploited?

CVE-2019-25395 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.24%.

How severe is CVE-2019-25395?

CVE-2019-25395 has a CVSS 3.1 base score of 7.2, rated high. EPSS estimates a 0.24% probability of exploitation.

Which products are affected by CVE-2019-25395?

Affected products include Smoothwall Express.

How do I fix CVE-2019-25395?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2019-25395 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.