CVE-2026-91801

Foxit PDF Editor/Reader RichMedia Annotation Directory Traversal Remote Code Execution Vulnerability

Published Sep 23, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
A path traversal vulnerability exists in Foxit PDF Editor/Reader's handling of embedded PDF resources. Insufficient validation of resource file paths may allow files to be written outside their intended locations, potentially enabling arbitrary code execution.

Analysis

AI-generated

Technical impact

Foxit PDF Editor and Reader process embedded PDF resources without properly validating file paths, allowing an attacker to supply file paths that escape the intended directory boundaries. This directory traversal flaw can be leveraged to write arbitrary files to privileged locations, and due to the ability to place executable payloads, the vulnerability enables remote code execution. The weakness directly correlates to the CWE-22 family of directory traversal vulnerabilities. The result is that an attacker who can deliver a crafted PDF can trigger the creation and execution of arbitrary code on the victim's system, compromising confidentiality, integrity, and availability.

Affected Systems

Foxit Software Inc. offers the vulnerable software in two product lines: Foxit PDF Editor and Foxit PDF Reader. Specific product versions affected are not enumerated in the available data; security teams should refer to Foxit’s security bulletin for the most current information to determine if their deployed version is impacted.

Risk and Exploitability

The CVSS score is 7.8, indicating a high severity. The EPSS score is below 1 %, suggesting a low probability of exploitation in the wild at the time of this analysis. The vulnerability is not listed in the CISA KEV catalog. Based on the description, the most likely attack vector is a malicious PDF document delivered via email, web download, or other means that the user opens with the compromised viewer. Successful exploitation would allow the attacker to write files to arbitrary locations and execute code, yielding full control over the affected system.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Check Foxit’s security bulletin for a patch that addresses the path traversal flaw and install the latest release.
  • If a patch is not yet available, restrict the PDF viewer’s file write capability by disabling features that allow writing outside the temporary directory or by running the viewer in a sandboxed environment.
  • Implement file system integrity monitoring or intrusion detection rules that alert on unexpected files being created or executed by the PDF viewer process.

Generated by OpenCVE AI on September 23, 2026 at 14:50 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Foxit
Foxit pdf Editor
Foxit pdf Reader
Microsoft
Microsoft windows
CPEs cpe:2.3:a:foxit:pdf_editor:*:*:*:*:*:*:*:*
cpe:2.3:a:foxit:pdf_reader:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Foxit
Foxit pdf Editor
Foxit pdf Reader
Microsoft
Microsoft windows
Type Values Removed Values Added
First Time appeared Foxitsoftware
Foxitsoftware foxit Pdf Editor
Foxitsoftware foxit Reader
Vendors & Products Foxitsoftware
Foxitsoftware foxit Pdf Editor
Foxitsoftware foxit Reader
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A path traversal vulnerability exists in Foxit PDF Editor/Reader's handling of embedded PDF resources. Insufficient validation of resource file paths may allow files to be written outside their intended locations, potentially enabling arbitrary code execution.
Title Foxit PDF Editor/Reader RichMedia Annotation Directory Traversal Remote Code Execution Vulnerability
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

Weaknesses
  • CWE-22

    Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Sources

Status
PUBLISHED
Assigner
Foxit
Published
Updated
Sep 23, 2026, 2:45 PM
Reserved
Sep 15, 2026, 7:34 AM
Status
Analyzed
Published
Sep 23, 2026, 8:17 AM
Modified
Oct 8, 2026, 1:55 PM