Is CVE-2026-91795 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-91795 being exploited in the wild.

How severe is CVE-2026-91795?

High severity, with a CVSS score of 7.8, published 23 September 2026.

Which products and versions are affected?

Foxit PDF Editor 2026.2.0.39747 and all previous 2026.x versions, 2025.3.0.35737 and all previous 2025.x versions, 2024.4.1.27687 and all previous 2024.x versions, 2023.3.0.23028 and all previous 2023.x versions, 14.0.7.33751 and all previous 14.x versions, 13.2.6.24111 and earlier; Foxit PDF Reader 2026.2.0.39747 and earlier.

Is there a fix for CVE-2026-91795?

A patch was published on 2026-09-23: Fixed in PDF Reader 2026.2.1 and PDF Editor 2026.2.1/14.0.8 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-91795 attacked?

It is attacked with local access.

Am I affected by CVE-2026-91795?

Check whether you run Foxit PDF Editor or Foxit PDF Reader at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-91795: Foxit PDF Editor and Reader FileOpen plugin encryption metadata validation bypass

CVE-2026-91795 · Severity: high · CVSS 7.8 · Published 2026-09-23

Foxit PDF Editor and Reader, widely used document tools in enterprises, contain a flaw in the FileOpen plugin that fails to properly validate encryption metadata in specially crafted PDF files. An attacker who tricks a user into opening a malicious PDF can exploit this to execute arbitrary code on the victim's computer, potentially leading to data theft or system compromise.

Technologies: Foxit PDF Editor, Foxit PDF Reader. Vendors: Foxit.

Quick answers

Is CVE-2026-91795 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-91795 being exploited in the wild.
How severe is CVE-2026-91795?: High severity, with a CVSS score of 7.8, published 23 September 2026.
Which products and versions are affected?: Foxit PDF Editor 2026.2.0.39747 and all previous 2026.x versions, 2025.3.0.35737 and all previous 2025.x versions, 2024.4.1.27687 and all previous 2024.x versions, 2023.3.0.23028 and all previous 2023.x versions, 14.0.7.33751 and all previous 14.x versions, 13.2.6.24111 and earlier; Foxit PDF Reader 2026.2.0.39747 and earlier.
Is there a fix for CVE-2026-91795?: A patch was published on 2026-09-23: Fixed in PDF Reader 2026.2.1 and PDF Editor 2026.2.1/14.0.8 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-91795 attacked?: It is attacked with local access.
Am I affected by CVE-2026-91795?: Check whether you run Foxit PDF Editor or Foxit PDF Reader at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The FileOpen plugin inadequately validates encryption metadata in PDF files, leaving internal pointers in an invalid state and enabling chained read and write access violations. This local attack requires user interaction (opening a PDF) and can result in arbitrary code execution through memory corruption. The vulnerability is tracked as CVE-2026-91795 and is fixed in the patched versions released on September 23, 2026.

Affected products

Foxit PDF Reader 2026.2.0.39747 and earlier
Foxit PDF Editor 2026.2.0.39747 and all previous 2026.x versions, 2025.3.0.35737 and all previous 2025.x versions, 2024.4.1.27687 and all previous 2024.x versions, 2023.3.0.23028 and all previous 2023.x versions, 14.0.7.33751 and all previous 14.x versions, 13.2.6.24111 and earlier

Timeline

2026-09-23: disclosed: Security bulletin and patch release
2026-09-23: patched: Fixed in PDF Reader 2026.2.1 and PDF Editor 2026.2.1/14.0.8

References

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

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.