Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-91791

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
23/09/2026
Last modified:
08/10/2026

Description

When processing a specially crafted PDF file, Foxit PDF Editor/Reader may encounter a reentrant execution condition involving JavaScript triggered by page-visibility events. This can cause the application to access a released page-view object while calculating annotation boundaries, resulting in an invalid memory read and application crash.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* 13.2.5.63482 (including)
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* 14.0.0.33046 (including) 14.0.7.33751 (including)
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* 2023.1.0.15510 (including) 2023.3.0.23028 (including)
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* 2024.1.0.23997 (including) 2024.4.1.27687 (including)
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* 2025.1.0.27937 (including) 2025.3.0.35737 (including)
cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:* 2026.1.0.36452 (including) 2026.2.0.39747 (including)
cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:* 2026.2.0.39747 (including)
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools