CVE-2026-91799: CWE-416 Use after free in Foxit Software Inc. Foxit PDF Editor
A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of JavaScript array objects. A specially crafted PDF may cause the application to access a released object during array processing, potentially resulting in application crashes or arbitrary code execution.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in Foxit PDF Editor/Reader's JavaScript array object handling. When processing a maliciously crafted PDF, the application may access memory that has already been freed, potentially causing crashes or enabling arbitrary code execution. The CVSS 3.1 base score is 7.8, with attack vector local, low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can result in application crashes or arbitrary code execution, compromising the confidentiality, integrity, and availability of the affected system. The attack requires local access and user interaction, limiting remote exploitation potential.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided at this time.
CVE-2026-91799: CWE-416 Use after free in Foxit Software Inc. Foxit PDF Editor
Description
A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of JavaScript array objects. A specially crafted PDF may cause the application to access a released object during array processing, potentially resulting in application crashes or arbitrary code execution.
CVSS v3.1
Score 7.8high
Affected software
Foxit Software Inc.
Foxit PDF Editor
Foxit Software Inc.
Foxit PDF Reader
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in Foxit PDF Editor/Reader's JavaScript array object handling. When processing a maliciously crafted PDF, the application may access memory that has already been freed, potentially causing crashes or enabling arbitrary code execution. The CVSS 3.1 base score is 7.8, with attack vector local, low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can result in application crashes or arbitrary code execution, compromising the confidentiality, integrity, and availability of the affected system. The attack requires local access and user interaction, limiting remote exploitation potential.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Foxit
- Date Reserved
- 2026-09-15T07:34:43.392Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab387caf7a7c541067c166a
Added to database: 09/23/2026, 08:03:22 UTC
Last enriched: 09/23/2026, 08:19:30 UTC
Last updated: 09/23/2026, 18:44:53 UTC
Views: 8
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