How severe is CVE-2019-25394?

CVE-2019-25394 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-25394 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-25394?

CVE-2019-25394 affects Smoothwall Smoothwall Express. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-25394?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2019-25394 have an EU (EUVD) identifier?

Yes. CVE-2019-25394 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19624.

When was CVE-2019-25394 published?

CVE-2019-25394 was published on 2026-02-16 and last updated on 2026-06-17.

CVE-2019-25394

CVE-2019-25394 is a high-severity vulnerability in Smoothwall Smoothwall Express with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 5.3
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2019-19624
Weakness: CWE-79
Affected product: Smoothwall Smoothwall Express
Published: 2026-02-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-25394?: 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.
How severe is CVE-2019-25394?: CVE-2019-25394 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-25394 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-25394?: CVE-2019-25394 affects Smoothwall Smoothwall Express. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-25394?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2019-25394 have an EU (EUVD) identifier?: Yes. CVE-2019-25394 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19624.
When was CVE-2019-25394 published?: CVE-2019-25394 was published on 2026-02-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:smoothwall:smoothwall_express:3.1:sp4:*:*:-:*:*:*

More vulnerabilities in Smoothwall Smoothwall Express

CVE-2011-1085 — High (CVSS 8.8): CSRF vulnerability in Smoothwall Express 3.
CVE-2019-25395 — High (CVSS 7.2): Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains multiple stored cross-site scripting vulnerabilities in the…
CVE-2019-25379 — High (CVSS 7.2): Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains stored and reflected cross-site scripting vulnerabilities in…
CVE-2019-25393 — Medium (CVSS 6.1): Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains a reflected cross-site scripting vulnerability that allows…
CVE-2019-25392 — Medium (CVSS 6.1): Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains a reflected cross-site scripting vulnerability that allows…
CVE-2019-25389 — Medium (CVSS 6.1): Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains a reflected cross-site scripting vulnerability that allows…

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