CVE-2019-25394
Stored XSS in Smoothwall Express modem.cgi Allows Script Injection
Publication date: 2026-02-16
Last updated on: 2026-02-20
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| smoothwall | smoothwall_express | 3.1 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in Smoothwall Express 3.1-SP4-polar-x86_64-update9 within the modem.cgi script. It involves multiple stored cross-site scripting (XSS) flaws that allow attackers to inject malicious JavaScript code through POST parameters.
Attackers can craft payloads in parameters such as INIT, HANGUP, SPEAKER_ON, SPEAKER_OFF, TONE_DIAL, and PULSE_DIAL. When the stored malicious data is later retrieved and rendered in users' browsers, the injected scripts execute, potentially compromising user sessions or data.
How can this vulnerability impact me? :
This vulnerability can lead to arbitrary JavaScript execution in the browsers of users who access the affected modem.cgi script. Such execution can result in session hijacking, theft of sensitive information, unauthorized actions performed on behalf of the user, or other malicious activities.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know