CVE-2026-91810: Out-of-bounds Read (CWE-125) in Foxit Software Inc. Foxit PDF Editor
A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of malformed PDF image masks. Inconsistent image metadata may cause incorrect alpha-channel processing during rendering, resulting in an out-of-bounds read and application crash.
AI Analysis
Technical Summary
This vulnerability involves a heap-based out-of-bounds read triggered by malformed PDF image masks in Foxit PDF Editor/Reader. The issue arises from inconsistent image metadata that causes incorrect processing of the alpha channel during PDF rendering, leading to memory access beyond allocated bounds and crashing the application.
Potential Impact
The vulnerability can cause the affected application to crash due to out-of-bounds memory reads. Confidentiality and integrity impacts are low or none, but availability is impacted due to application crashes. There is no indication of known exploits in the wild.
Mitigation Recommendations
No patch or official fix information is provided. 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 untrusted PDF files.
CVE-2026-91810: Out-of-bounds Read (CWE-125) in Foxit Software Inc. Foxit PDF Editor
Description
A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of malformed PDF image masks. Inconsistent image metadata may cause incorrect alpha-channel processing during rendering, resulting in an out-of-bounds read and application crash.
CVSS v3.1
Score 6.1medium
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 read triggered by malformed PDF image masks in Foxit PDF Editor/Reader. The issue arises from inconsistent image metadata that causes incorrect processing of the alpha channel during PDF rendering, leading to memory access beyond allocated bounds and crashing the application.
Potential Impact
The vulnerability can cause the affected application to crash due to out-of-bounds memory reads. Confidentiality and integrity impacts are low or none, but availability is impacted due to application crashes. There is no indication of known exploits in the wild.
Mitigation Recommendations
No patch or official fix information is provided. 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 untrusted PDF files.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Foxit
- Date Reserved
- 2026-09-15T07:34:45.815Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab387ccf7a7c541067c1675
Added to database: 09/23/2026, 08:03:24 UTC
Last enriched: 09/23/2026, 08:18:33 UTC
Last updated: 09/24/2026, 03:19:27 UTC
Views: 11
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