CVE-2026-91792: CWE-416 Use after free in Foxit Software Inc. Foxit PDF Editor
When processing a specially crafted PDF, Foxit PDF Editor/Reader may perform reentrant zoom and layout operations through page- and annotation-related JavaScript actions. This can cause the application to access page objects after they have been released, resulting in a use-after-free condition and an application crash.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in Foxit PDF Editor/Reader triggered by specially crafted PDF files. The flaw occurs due to reentrant zoom and layout operations initiated through JavaScript actions related to pages and annotations. These operations cause the application to access page objects that have already been released, resulting in memory corruption and application crashes. The CVSS 3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. There is no information about patches or vendor advisories indicating a fix.
Potential Impact
Successful exploitation can cause the application to crash and potentially allow execution of arbitrary code due to use-after-free memory corruption. The CVSS score reflects high impact on confidentiality, integrity, and availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid opening untrusted or suspicious PDF files that may trigger this vulnerability.
CVE-2026-91792: CWE-416 Use after free in Foxit Software Inc. Foxit PDF Editor
Description
When processing a specially crafted PDF, Foxit PDF Editor/Reader may perform reentrant zoom and layout operations through page- and annotation-related JavaScript actions. This can cause the application to access page objects after they have been released, resulting in a use-after-free condition and an application crash.
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 triggered by specially crafted PDF files. The flaw occurs due to reentrant zoom and layout operations initiated through JavaScript actions related to pages and annotations. These operations cause the application to access page objects that have already been released, resulting in memory corruption and application crashes. The CVSS 3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. There is no information about patches or vendor advisories indicating a fix.
Potential Impact
Successful exploitation can cause the application to crash and potentially allow execution of arbitrary code due to use-after-free memory corruption. The CVSS score reflects high impact on confidentiality, integrity, and availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid opening untrusted or suspicious PDF files that may trigger this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Foxit
- Date Reserved
- 2026-09-15T07:34:40.287Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab387c8f7a7c541067c1662
Added to database: 09/23/2026, 08:03:20 UTC
Last enriched: 09/23/2026, 08:32:41 UTC
Last updated: 09/24/2026, 01:57:04 UTC
Views: 8
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