CVE-2026-5941: Foxit PDF Editor/Reader AcroForm Signature Remote Code Execution Vulnerability

Q: What is the severity of CVE-2026-5941?

CVE-2026-5941 is rated as a critical vulnerability due to its potential to allow remote code execution.

Q: How do I fix CVE-2026-5941?

To fix CVE-2026-5941, update to the latest version of Foxit PDF Editor or Foxit Reader as recommended by the vendor.

Q: What types of systems are affected by CVE-2026-5941?

CVE-2026-5941 affects Foxit PDF Editor and Foxit Reader across all supported versions.

Q: What is the impact of exploiting CVE-2026-5941?

Exploiting CVE-2026-5941 can lead to program crashes and invalid memory writes, potentially compromising system security.

Q: Are there any workarounds for CVE-2026-5941?

Currently, the best workaround for CVE-2026-5941 is to avoid opening untrusted PDF files until a patch is applied.

Published Apr 27, 2026

Updated

Parsing logic flaws cause non-signature data to be misidentified as valid signatures when processing malformed form field hierarchies, leading to invalid memory writes and program crashes during internal data structure construction.

Affected Software

5 affected components

Foxit Foxit PDF Editor

Foxit Foxit Reader

Foxit PDF Editor>=14.0.0<14.0.4

Foxit PDF Editor>=2023.0.0<2026.1.1

Foxit PDF Reader<2026.1.1

Event History

Apr 27, 2026

CVE Published

via MITRE·11:00 AM

Data Sourced

via MITRE·11:00 AM

DescriptionSeverityWeakness

Data Sourced

via NVD·12:16 PM

DescriptionSeverityWeaknessAffected Software

Oct 6, 58306

Event

via FIRST·07:42 PM

Frequently Asked Questions

What is the severity of CVE-2026-5941?

CVE-2026-5941 is rated as a critical vulnerability due to its potential to allow remote code execution.

How do I fix CVE-2026-5941?

To fix CVE-2026-5941, update to the latest version of Foxit PDF Editor or Foxit Reader as recommended by the vendor.

What types of systems are affected by CVE-2026-5941?

CVE-2026-5941 affects Foxit PDF Editor and Foxit Reader across all supported versions.

What is the impact of exploiting CVE-2026-5941?

Exploiting CVE-2026-5941 can lead to program crashes and invalid memory writes, potentially compromising system security.

Are there any workarounds for CVE-2026-5941?

Currently, the best workaround for CVE-2026-5941 is to avoid opening untrusted PDF files until a patch is applied.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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