ZDI-26-595: Foxit PDF Reader Annotation Use-After-Free Remote Code Execution Vulnerability
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 7.8. The following CVEs are assigned: CVE-2026-57254.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Because user interaction is required to exploit this issue (victim must visit a malicious page or open a malicious file), restrict or warn users about opening unknown PDFs/links and block access to untrusted content at the network/email gateway where possible.
- Compensating control
Mitigate exposure to remote code execution by restricting access to Foxit PDF Reader execution on untrusted endpoints/users until the vendor fix is applied.