ZDI-26-735: Foxit PDF Reader Doc Object Use-After-Free Information Disclosure Vulnerability
ZDI reported a Foxit PDF Reader Doc object use-after-free that can leak information after user interaction (CVE-2026-91806).
ZDI-26-735 describes a use-after-free in Foxit PDF Reader's Doc object handling that can let a remote attacker disclose sensitive information. The target must open a malicious file or visit a malicious page. ZDI assigned CVSS 3.3 and CVE-2026-91806, and does not claim exploitation in the wild.
- Doc object use-after-free can disclose sensitive information.
- User must open a malicious file or visit a malicious page.
- ZDI rates it CVSS 3.3; CVE-2026-91806 is assigned.
- No active exploitation is reported.
- CVEs
- CVE-2026-91806
- Vendors
- Foxit
- Products
- Foxit PDF Reader
- Organizations
- Zero Day Initiative
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-91806 | Unauthenticated Use-After-Free in Foxit PDF Editor/Reader 5.0+ (CVE-2026-91806) | 7.8 | — |
From the original article
This vulnerability allows remote attackers to disclose sensitive information 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 3.
zerodayinitiative.com
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