ZDI-26-731: Foxit PDF Reader FileOpen Uninitialized Variable Remote Code Execution Vulnerability
Foxit PDF Reader FileOpen flaw CVE-2026-91795 allows remote code execution if a user opens a malicious file.
ZDI-26-731 discloses an uninitialized-variable flaw in Foxit PDF Reader's FileOpen handling that can let a remote attacker execute arbitrary code. The victim must open a malicious file or visit a malicious page. ZDI assigned CVSS 7.8 and CVE-2026-91795. The advisory does not report exploitation in the wild.
- ZDI-26-731 covers an uninitialized variable in FileOpen handling.
- Remote code execution requires opening a malicious file or page.
- ZDI rates the issue CVSS 7.8 as CVE-2026-91795.
- No active exploitation is reported.
- CVEs
- CVE-2026-91795
- Vendors
- Foxit
- Products
- Foxit PDF Reader
- Organizations
- Zero Day Initiative
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-91795 | RCE via FileOpen Plugin in Foxit PDF Editor/Reader | 7.8 | — |
From the original article
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.
zerodayinitiative.com
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