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CVE-2026-91795

Foxit PDF Editor/Reader FileOpen Uninitialized Variable Remote Code Execution Vulnerability

HIGH
7.8
CVSS Score
Published: September 23, 2026 at 07:51 AM UTC
Updated: October 8, 2026 at 01:48 PM UTC
2 products affected across 1 vendorPDF ReaderPDF Editor· also runs on 1 platform

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

Foxit PDF Editor/Reader's FileOpen plugin did not adequately validate certain encryption metadata in specially crafted PDF files. This could leave an internal pointer in an invalid state, resulting in chained read and write access violations and potentially enabling arbitrary code execution.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PDF Editor· Foxitsoftware
95%
v ≤ 13.2.5.6348214.0.0.33046 ≤ v ≤ 14.0.7.337512023.1.0.15510 ≤ v ≤ 2023.3.0.230282024.1.0.23997 ≤ v ≤ 2024.4.1.276872025.1.0.27937 ≤ v ≤ 2025.3.0.357372026.1.0.36452 ≤ v ≤ 2026.2.0.39747*Versions 13.2.6 and earlierVersions 14.0.7 and earlierVersions 2026.2 and earlier
microsoft-windows (environment)
PDF Reader· Foxitsoftware
95%
v ≤ 2026.2.0.39747*Versions 2026.2 and earlier
microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://www.foxit.com/support/security-bulletins.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHFoxit
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-822

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