What is the CVSS score of CVE-2019-25428?

CVE-2019-25428 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Openvpn are affected by CVE-2019-25428?

Organizations using the openvpn_users endpoint that allow attackers to inject malicious scripts should be aware of moderate risk from CVE-2019-25428, a cross-site scripting vulnerability rated CVSS…

Is there a public PoC exploit available for CVE-2019-25428?

Yes, a public proof-of-concept exploit is available for CVE-2019-25428. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2019-25428?

Within 30 days: Identify affected systems running the openvpn_users endpoint that allow attackers to inject ma and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Openvpn CVE-2019-25428

MEDIUM

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

2026-02-19 disclosure@vulncheck.com

Openvpn XSS Dome Firewall

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

AV:N/AC:L/PR:N/UI:R/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: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 - 22:03 vuln.today

PoC Detected

Feb 20, 2026 - 17:13 vuln.today

Public exploit code

CVE Published

Feb 19, 2026 - 13:16 nvd

MEDIUM 6.1

DescriptionCVE.org

Comodo Dome Firewall 2.7.0 contains multiple reflected cross-site scripting vulnerabilities in the openvpn_users endpoint that allow attackers to inject malicious scripts through POST parameters. Attackers can submit crafted POST requests with script payloads in the username, remotenets, explicitroutes, static_ip, custom_dns, or custom_domain parameters to execute arbitrary JavaScript in users' browsers.

AnalysisAI

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects the openvpn_users component of Dome Firewall. Comodo Dome Firewall 2.7.0 contains multiple reflected cross-site scripting vulnerabilities in the openvpn_users endpoint that allow attackers to inject malicious scripts through POST parameters. Attackers can submit crafted POST requests with script payloads in the username, remotenets, explicitroutes, static_ip, custom_dns, or custom_domain parameters to execute arbitrary JavaScript in users' 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-2019-25428 vulnerability details – vuln.today

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