CVE-2026-91797 PUBLISHED

Foxit PDF Editor/Reader Portfolio Directory Traversal Remote Code Execution Vulnerability

Assigner: Foxit
Reserved: 15.09.2026 Published: 23.09.2026 Updated: 23.09.2026

Foxit PDF Editor/Reader failed to validate the directory traversal path in the attachment file name, resulting in malicious attachments being able to be written to directories outside the expected secure area when the PDF is opened.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 7.8

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Foxit Software Inc.
Product	Foxit PDF Editor
Versions	Default: unaffected Version Versions 2026.2 and earlier is affected Version Versions 14.0.7 and earlier is affected Version Versions 13.2.6 and earlier is affected

Vendor	Foxit Software Inc.
Product	Foxit PDF Reader
Versions	Default: unaffected Version Versions 2026.2 and earlier is affected

Credits

Landon Peng (lunbun) of Lunbun LLC working with TrendAI Zero Day Initiative finder

References

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

Problem Types

CWE-73 External control of file name or path CWE

Impacts

Potential arbitrary code execution