CVE-2026-91808: 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 PDF image objects with inconsistent compression metadata. Insufficient validation during image decoding may result in an undersized buffer and an out-of-bounds read during rendering, causing an application crash.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds read in Foxit PDF Editor's handling of PDF image objects that contain inconsistent compression metadata. The application does not properly validate the size of the buffer during image decoding, which can result in an undersized buffer and subsequent out-of-bounds memory access during rendering. This can cause the application to crash. The vulnerability is identified as CWE-125 (Out-of-bounds Read) and has a CVSS 3.1 base score of 6.1, indicating a medium severity. No known exploits are reported in the wild, and no affected versions or patches have been specified.
Potential Impact
An attacker could craft a malicious PDF with specially crafted image objects that exploit this vulnerability to cause the Foxit PDF Editor to crash. The impact is limited to denial of service (application crash) with no reported confidentiality or integrity loss.
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 untrusted PDF files, especially those containing complex image objects with compression metadata.
CVE-2026-91808: 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 PDF image objects with inconsistent compression metadata. Insufficient validation during image decoding may result in an undersized buffer and an out-of-bounds read during rendering, causing an 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 an out-of-bounds read in Foxit PDF Editor's handling of PDF image objects that contain inconsistent compression metadata. The application does not properly validate the size of the buffer during image decoding, which can result in an undersized buffer and subsequent out-of-bounds memory access during rendering. This can cause the application to crash. The vulnerability is identified as CWE-125 (Out-of-bounds Read) and has a CVSS 3.1 base score of 6.1, indicating a medium severity. No known exploits are reported in the wild, and no affected versions or patches have been specified.
Potential Impact
An attacker could craft a malicious PDF with specially crafted image objects that exploit this vulnerability to cause the Foxit PDF Editor to crash. The impact is limited to denial of service (application crash) with no reported confidentiality or integrity loss.
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 untrusted PDF files, especially those containing complex image objects with compression metadata.
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: 6ab387ccf7a7c541067c1673
Added to database: 09/23/2026, 08:03:24 UTC
Last enriched: 09/23/2026, 08:18:39 UTC
Last updated: 09/24/2026, 03:24:18 UTC
Views: 11
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