CVE-2026-91812

HIGH CVSS 3.1: 8.1 EPSS 0.14%
Updated Oct 08, 2026
Microsoft
Parameter Value
CVSS 8.1 (HIGH)
Affected Versions 14.0.0.33046 — 2026.2.0.39747
Type CWE-295 (Improper Certificate Validation)
Vendor Microsoft
Public PoC No

A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows man-in-the-middle attackers to bypass certificate validation and package integrity checks, potentially enabling arbitrary code execution with system privileges.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 8

Configuration From (including) Up to (excluding)
Foxit Pdf_Editor
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
— <= 13.2.5.63482
Foxit Pdf_Editor
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
14.0.0.33046 <= 14.0.7.33751
Foxit Pdf_Editor
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
2023.1.0.15510 <= 2023.3.0.23028
Foxit Pdf_Editor
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
2024.1.0.23997 <= 2024.4.1.27687
Foxit Pdf_Editor
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
2025.1.0.27937 <= 2025.3.0.35737
Foxit Pdf_Editor
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
2026.1.0.36452 <= 2026.2.0.39747
Foxit Pdf_Reader
cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*
— <= 2026.2.0.39747
Microsoft Windows
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
— —