CVE-2025-55312
Summary
CVE-2025-55312 is a high-severity vulnerability affecting Foxit PDF Reader and Editor for Windows. This vulnerability allows for potential memory corruption and arbitrary code execution due to improper handling of internal states after deleting pages via JavaScript.
Successful exploitation could lead to application crashes or allow an attacker to execute malicious code on the affected system.
Technical Details
The vulnerability stems from a flaw in how Foxit PDF Reader and Editor manage internal states after pages are deleted using JavaScript. Specifically, when a page is deleted via JavaScript, the application fails to properly update its internal data structures. Subsequent operations related to annotation management rely on these outdated and invalid states.
This discrepancy leads to a dereference of invalid or released memory. When the application attempts to access memory locations that are no longer valid or have been freed, it results in memory corruption. This corruption can manifest as application crashes or, more critically, can be leveraged by an attacker to inject and execute arbitrary code.
The root cause lies in the lack of proper synchronization between the JavaScript-driven page deletion process and the internal memory management routines of the application. This lack of synchronization creates a window of opportunity for memory corruption to occur.
Affected Products and Versions
The following Foxit products and versions are known to be affected by CVE-2025-55312:
- Foxit PDF Reader for Windows (versions prior to 13.2)
- Foxit PDF Editor for Windows (versions prior to 13.2 and 2025 before 2025.2)
It is highly recommended to upgrade to the latest versions to mitigate this vulnerability.
Impact Assessment
Successful exploitation of CVE-2025-55312 can have significant consequences:
- Application Crashes: The most immediate impact is application instability and crashes, disrupting user workflows.
- Arbitrary Code Execution: An attacker could potentially inject and execute arbitrary code on the affected system, gaining control over the user's machine. This could lead to data theft, malware installation, or further system compromise.
Remediation
Immediate Actions
- Upgrade Foxit PDF Reader/Editor: The primary remediation is to upgrade to the latest versions of Foxit PDF Reader and Editor (version 13.2 or later for version 13, and version 2025.2 or later for version 2025).
- Exercise Caution with PDF Files: Be cautious when opening PDF files from untrusted sources. Verify the sender and scan the file with a reputable antivirus program before opening.
Long-term Solutions
- Enable Automatic Updates: Configure Foxit PDF Reader/Editor to automatically download and install updates to ensure timely patching of security vulnerabilities.
Detection & Scanning
Detecting CVE-2025-55312 typically involves identifying vulnerable versions of Foxit PDF Reader and Editor. This can be achieved through:
- Software Inventory: Maintain an accurate inventory of installed software and their versions.
- Vulnerability Scanners: Utilize vulnerability scanners that can identify outdated and vulnerable software.
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