PDF Editor, PDF Reader: limit execution permissions

Published · Updated · Digital strategy · 4 min read · By Cyber Intelligence Embassy

At a glance

PDF Editor, PDF Reader: code execution. This 2026-09-26 case examines 4 version entries and 31 CVEs, documented releases and checks suited to runtime platforms, using CERTFR-2026-AVI-1214.

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In this article

Retrospective for 2026-09-26, compiled on 27 October 2026. The date identifies the day being analysed; source publication and revision dates are recorded below.

What this advisory changes in your environment

The starting point is CERTFR-2026-AVI-1214, published on 2026-09-23. Its scope includes PDF Editor, PDF Reader. Reported consequences are data integrity compromise, code execution, loss of confidentiality, privilege escalation. These statements apply to the advisory’s scope; they do not assign every consequence to every product or CVE.

This case contains 4 version entries; CVE identifier count: 31. Track remediation by component: a successful overall update does not demonstrate that PDF Editor and PDF Reader each received their respective fix.

Products and versions to examine

Reference
CERTFR-2026-AVI-1214
Source first published
2026-09-23
Latest source revision available for this day
2026-09-23
Named components
PDF Editor, PDF Reader
CVE identifiers
CVE-2026-91817, CVE-2026-91796, CVE-2026-91790, CVE-2026-91795, CVE-2026-91803, CVE-2026-91800, CVE-2026-91814, CVE-2026-91799, CVE-2026-91789, CVE-2026-91806, CVE-2026-91794, CVE-2026-91788, CVE-2026-91809, CVE-2026-91811, CVE-2026-91797, CVE-2026-91810, CVE-2026-91793, CVE-2026-91792, CVE-2026-91802, CVE-2026-91816, CVE-2026-91791, CVE-2026-91798, CVE-2026-91813, CVE-2026-91807 … (+7)
ComponentPublished condition
PDF Editor14.x : < 14.0.8
PDF Reader< 2026.2.1
PDF Editor13.x : < 13.2.7
PDF Editor< 2026.2.1

For PDF Editor, the published condition is “14.x : < 14.0.8”. Compare the version actually loaded with that condition within its own release branch. A fix installed on another edition of PDF Editor, PDF Reader does not close this case.

Mechanism and prerequisites

Execution context matters as much as the flaw’s name. Distinguish operations available to a local user from those exposed remotely, then examine the permissions and secrets of the affected process.

The primary record CVE-2026-91804, published by Foxit, covers Foxit PDF Editor, Foxit PDF Reader. The retained revision is dated 2026-09-23. Its scope is presented separately from the integrations and product groupings in CERTFR-2026-AVI-1214.

The published metric for CVE-2026-91804 is CVSS 3.1, 7.8/10. The vector below describes technical prerequisites; it does not measure attack frequency or the likelihood that your deployment is compromised.

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

Attack vector
local
Prior privileges
none
User interaction
required
Complexity
low
Weakness
CWE-787

Choose the appropriate intervention

  1. Locate PDF Editor instances, running releases and service owners. Record condition 14.x : < 14.0.8 in the ticket alongside reference CERTFR-2026-AVI-1214.
  2. Compare the installed branch with the vendor’s PDF Editor release notes. Prepare the package for that branch and a dependent-service test, retaining the pre-change state.
  3. After changing PDF Editor, capture the loaded version again and verify the workflow below. Any exception needs an owner, an exposure-reduction measure and an expiry date.

Verify the fix in a real workflow

Validation scenario to adapt for PDF Editor, PDF Reader: For PDF Editor, capture the version loaded by the process or active kernel, then restart only as required by maintenance instructions. Check a dependent workflow and look for embedded copies in distributed images or executables. This is a proposed defensive check, not a claim that testing was performed against third-party systems.

Limit of case CERTFR-2026-AVI-1214: this analysis replaces neither vendor prerequisites nor investigation of your logs. Only documented versions are reproduced; no attack date or victim is invented.

Questions specific to this case

Which condition should be checked for PDF Editor?

Advisory CERTFR-2026-AVI-1214 states: PDF Editor — 14.x : < 14.0.8. Check the edition and running release; do not extend the published boundary to branches absent from the advisory.

Why not use one fix for PDF Editor and PDF Reader?

CERTFR-2026-AVI-1214 distinguishes these components within a scope containing 4 entries. Match each branch to its own update documentation and functional check.

Which prerequisites does record CVE-2026-91804 specify?

For CVE-2026-91804, the published vector is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Verify those conditions on Foxit PDF Editor, Foxit PDF Reader before applying them to an integration named in CERTFR-2026-AVI-1214.

Sources and related reading

Practical guide : Prioritize vulnerabilities and verify remediation

Explore the decision addressed in this case

Complete source advisory inventory

The article table may be an extract. These lists contain every affected-system entry and CVE in the specified advisory revision. They are not an inventory of your assets and do not map every CVE to every product.

Official source · CERTFR-2026-AVI-1214
Advisory revision : · Checked on :

Affected systems · 4

Original French wording is retained to avoid ambiguous translations of version conditions.

  1. PDF Editor versions 14.x antérieures à 14.0.8
  2. PDF Reader versions antérieures à 2026.2.1
  3. PDF Editor versions 13.x antérieures à 13.2.7
  4. PDF Editor versions antérieures à 2026.2.1
CVE identifiers · 31