---
id: CVE-2026-91813
title: >-
  A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows an update
  package to be replaced between download and high-privilege extraction due to
  insufficient file locking and integrity validation
summary: >-
  A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows an update
  package to be replaced between download and high-privilege extraction due to
  insufficient file locking and integrity validation. This could enable local
  attac…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-367
vendor: foxit
product: pdf_editor
affected:
  - pdf_editor <= 13.2.5.63482
  - 'pdf_editor >= 14.0.0.33046, <= 14.0.7.33751'
  - 'pdf_editor >= 2023.1.0.15510, <= 2023.3.0.23028'
  - 'pdf_editor >= 2024.1.0.23997, <= 2024.4.1.27687'
  - 'pdf_editor >= 2025.1.0.27937, <= 2025.3.0.35737'
  - 'pdf_editor >= 2026.1.0.36452, <= 2026.2.0.39747'
  - pdf_reader <= 2026.2.0.39747
published: '2026-09-23'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T14:01:22.210'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91813'
references:
  - url: 'https://www.foxit.com/support/security-bulletins.html'
    label: 14984358-7092-470d-8f34-ade47a7658a2
tags:
  - nvd
  - cve.org
epss: 0.00091
epssPercentile: 0.00442
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-23T14:37:19.640678Z'
ingestedAt: '2026-09-23T08:20:37.595Z'
---

## Overview

A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows an update package to be replaced between download and high-privilege extraction due to insufficient file locking and integrity validation. This could enable local attackers to execute arbitrary code with elevated privileges.

## Affected

- `pdf_editor <= 13.2.5.63482`
- `pdf_editor >= 14.0.0.33046, <= 14.0.7.33751`
- `pdf_editor >= 2023.1.0.15510, <= 2023.3.0.23028`
- `pdf_editor >= 2024.1.0.23997, <= 2024.4.1.27687`
- `pdf_editor >= 2025.1.0.27937, <= 2025.3.0.35737`
- `pdf_editor >= 2026.1.0.36452, <= 2026.2.0.39747`
- `pdf_reader <= 2026.2.0.39747`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.