Security Flaw in Foxit PDF Editor/Reader Allows Unauthorized SMB Authentication
CVE-2026-91796

6.1MEDIUM

Key Information:

Vendor

Foxit Inc.

Status
Foxit PDF Editor
Foxit
Vendor
CVE Published:
23 September 2026

What is CVE-2026-91796?

A security vulnerability exists in Foxit PDF Editor and Reader where the application fails to verify permissions effectively in secure reading mode. This can allow specially crafted PDF documents to trigger unauthorized SMB authentication, exposing users' credential hashes without any security prompts. Users may be at risk of credential leakage when opening manipulated PDFs, emphasizing the need for immediate awareness and updates to mitigate potential exploitation.

Affected Version(s)

Foxit PDF Editor Windows Versions 2026.2 and earlier

Foxit PDF Editor Windows Versions 14.0.7 and earlier

Foxit PDF Editor Windows Versions 13.2.6 and earlier

References

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

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Liang Zhu working with TrendAI Zero Day Initiative
.