CVE-2025-32451: 
Foxit PDF Reader vulnerability analysis and mitigation

A memory corruption vulnerability (CVE-2025-32451) was discovered in Foxit Reader version 2025.1.0.27937. The vulnerability was disclosed on June 2, 2025, and patched on August 13, 2025. The vulnerability exists due to the use of an uninitialized pointer in the application's signature handling functionality. This security flaw affects Foxit Reader's PDF document processing capabilities, particularly when handling JavaScript code within PDF documents (Talos).

The vulnerability stems from an uninitialized pointer in the CPDFSignature object handling. When processing signature objects through JavaScript code, a field in the object remains uninitialized and is later accessed without proper validation. The vulnerability has been assigned a CVSS v3.1 score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The issue is classified under CWE-824 (Access of Uninitialized Pointer) ([Talos](https://talosintelligence.com/vulnerabilityreports/TALOS-2025-2202), NVD).

The vulnerability can lead to memory corruption and potentially result in arbitrary code execution on the affected system. An attacker who successfully exploits this vulnerability could gain the ability to execute malicious code with the privileges of the user running Foxit Reader. The impact is heightened when the browser plugin extension is enabled, as exploitation could occur through specially crafted websites (Talos).

The vulnerability has been patched by Foxit Software. Users should update to a version newer than Foxit Reader 2025.1.0.27937. As a general security practice, users should exercise caution when opening PDF documents from untrusted sources and consider disabling the browser plugin extension when not needed (Talos).