CVE-2025-66521 - CVE House
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Status published Medium CVE-2025-66521

Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Trusted Certificates Feature

Vulnerability Description

A stored cross-site scripting (XSS) vulnerability exists in pdfonline.foxit.com within the Trusted Certificates feature. A crafted payload can be injected as the certificate name, which is later rendered into the DOM without proper sanitization. As a result, the injected script executes each time the Trusted Certificates view is loaded.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Novee

Affected Vendor

Foxit Software Inc.

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Affected Software

pdfonline.foxit.com
Vulnerable Versions:
before 2025‑12‑01

Timeline

Official Publish: December 19th, 2025
Last Modified: December 19th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Weaknesses (CWE)