CVE-2026-91802: Out-of-bounds Write (CWE-787) in Foxit Software Inc. Foxit PDF Editor
A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s WebP image decoding due to improper handling of bitmap stride and target buffer formats. Successful exploitation could result in an application crash.
AI Analysis
Technical Summary
This vulnerability involves a heap-based out-of-bounds write in Foxit PDF Editor/Reader's WebP image decoding due to incorrect processing of bitmap stride and target buffer formats. The flaw could lead to memory corruption resulting in an application crash. The CVSS 3.1 score is 7.8, indicating high severity with potential impact on confidentiality, integrity, and availability. No affected versions or patches are explicitly stated in the available data. There is no indication of known exploits in the wild.
Potential Impact
Successful exploitation can cause an application crash, potentially leading to denial of service. The CVSS vector indicates high impact on confidentiality, integrity, and availability, but no further details on data compromise or code execution are provided.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when opening PDF files containing WebP images from untrusted sources.
CVE-2026-91802: Out-of-bounds Write (CWE-787) in Foxit Software Inc. Foxit PDF Editor
Description
A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s WebP image decoding due to improper handling of bitmap stride and target buffer formats. Successful exploitation could result in 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 heap-based out-of-bounds write in Foxit PDF Editor/Reader's WebP image decoding due to incorrect processing of bitmap stride and target buffer formats. The flaw could lead to memory corruption resulting in an application crash. The CVSS 3.1 score is 7.8, indicating high severity with potential impact on confidentiality, integrity, and availability. No affected versions or patches are explicitly stated in the available data. There is no indication of known exploits in the wild.
Potential Impact
Successful exploitation can cause an application crash, potentially leading to denial of service. The CVSS vector indicates high impact on confidentiality, integrity, and availability, but no further details on data compromise or code execution are provided.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when opening PDF files containing WebP images from untrusted sources.
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: 6ab387caf7a7c541067c166d
Added to database: 09/23/2026, 08:03:22 UTC
Last enriched: 09/23/2026, 08:19:05 UTC
Last updated: 09/24/2026, 04:01:02 UTC
Views: 11
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