CVE-2026-91814 — MEDIUM (5.3)

Vulnerability Description

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.

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Related Weaknesses (CWE)

CWE-347

References

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

FAQ

What is CVE-2026-91814?

CVE-2026-91814 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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,...

How severe is CVE-2026-91814?

CVE-2026-91814 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-91814?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.