Stored Cross-Site Scripting Vulnerability in Foxit Trusted Certificates
CVE-2025-66521

6.3MEDIUM

Key Information:

Vendor

Foxit Inc.

Status
PDFonline.foxit.com
Vendor
CVE Published:
19 December 2025

What is CVE-2025-66521?

A stored cross-site scripting (XSS) vulnerability has been identified in the Trusted Certificates feature of Foxit PDF Online. This vulnerability allows an attacker to inject a malicious payload through the certificate name field. When users access the Trusted Certificates view, the injected script executes due to inadequate sanitization of the input. This could lead to unauthorized actions being performed on behalf of users, compromising data integrity and user trust.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

pdfonline.foxit.com before 2025‑12‑01

References

https://www.foxit.com/support/security-bulletins.html

CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

thisis0xczar from Novee.io
JSON
.