CVE-2026-91814

MEDIUM CVSS 3.1: 5.3 EPSS 0.17%
Updated Sep 23, 2026
Foxit Software Inc.
Parameter Value
CVSS 5.3 (MEDIUM)
Type CWE-347 (Improper Verification of Cryptographic Signature)
Vendor Foxit Software Inc.
Public PoC No

A signature validation vulnerability exists in Foxit PDF Editor/Reader’s handling of incrementally updated PDF documents. Changes to visible document content may not invalidate the existing signature, allowing attackers to alter signed content and potentially carry out content spoofing while the document continues to appear validly signed.

Attack Parameters

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

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products

foxit software inc.:foxit pdf reader foxit software inc.:foxit pdf editor