CVE-2026-3778 — MEDIUM (6.2)

Q: How severe is CVE-2026-3778?

CVE-2026-3778 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-3778?

Check the references section above for vendor advisories and patch information. Affected products include: Foxit Pdf Editor, Foxit Pdf Reader, Microsoft Windows, Apple Macos.

Vulnerability Description

The application does not detect or guard against cyclic PDF object references while handling JavaScript in PDF. When pages and annotations are crafted that reference each other in a loop, passing the document to APIs (e.g., SOAP) that perform deep traversal can cause uncontrolled recursion, stack exhaustion, and application crashes.

CVSS Score

6.2

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Foxit	Pdf Editor	<= 13.2.2.24014
Foxit	Pdf Reader	<= 2025.3.0.35737
Microsoft	Windows	-
Apple	Macos	-

Related Weaknesses (CWE)

CWE-674

References

https://www.foxit.com/support/security-bulletins.htmlVendor Advisory

FAQ

What is CVE-2026-3778?

CVE-2026-3778 is a vulnerability with a CVSS score of 6.2 (MEDIUM). The application does not detect or guard against cyclic PDF object references while handling JavaScript in PDF. When pages and annotations are crafted that reference each other in a loop, passing the ...

How severe is CVE-2026-3778?

CVE-2026-3778 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-3778?

Check the references section above for vendor advisories and patch information. Affected products include: Foxit Pdf Editor, Foxit Pdf Reader, Microsoft Windows, Apple Macos.