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EPSS 0.2%top 93%

CVE-2026-91793: CWE-416 Use after free in Foxit Software Inc. Foxit PDF Editor

0
High
VulnerabilityCVE-2026-91793cvecve-2026-91793cwe-416
Published: 09/23/2026 (09/23/2026, 07:51:16 UTC)
Source: CVE Database V5
Vendor/Project: Foxit Software Inc.
Product: Foxit PDF Editor

Description

When opening a specially crafted PDF, Foxit PDF Editor/Reader executes scripts that modify annotation rich-text attributes containing malformed font data. During subsequent annotation appearance reconstruction, it accesses an object after it has been released, resulting in a use-after-free condition and an application crash.

CVSS v3.1

Score 7.8high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected software

Foxit Software Inc.

Foxit PDF Editor

Foxit Software Inc.

Foxit PDF Reader

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/23/2026, 08:32:37 UTC

Technical Analysis

This vulnerability involves a use-after-free condition in Foxit PDF Editor/Reader. When a specially crafted PDF is opened, scripts modify annotation rich-text attributes containing malformed font data. During the process of reconstructing annotation appearance, the software accesses an object that has already been freed, resulting in a use-after-free flaw that causes the application to crash. The CVSS 3.1 base score is 7.8, indicating high severity with high impact on confidentiality, integrity, and availability. The attack vector is local with low complexity, no privileges required, but user interaction is needed.

Potential Impact

Successful exploitation can lead to application crashes and potentially allow an attacker to execute arbitrary code or cause denial of service. The vulnerability affects confidentiality, integrity, and availability with high impact as per the CVSS score.

Mitigation Recommendations

No patch or official fix information is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should exercise caution when opening PDF files from untrusted sources and consider disabling script execution in Foxit PDF Editor/Reader if possible.

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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: 6ab387c8f7a7c541067c1663

Added to database: 09/23/2026, 08:03:20 UTC

Last enriched: 09/23/2026, 08:32:37 UTC

Last updated: 09/23/2026, 22:34:31 UTC

Views: 9

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