CVE-2022-37372 in PDF-XChange Editor
Summary
by MITRE • 03/29/2023
This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PDF files. Crafted data in a PDF file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-17809.
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Analysis
by VulDB Data Team • 07/19/2026
This vulnerability represents a critical buffer overflow flaw in PDF-XChange Editor that enables remote code execution through maliciously crafted PDF files. The vulnerability stems from insufficient input validation during PDF file parsing operations, specifically when processing certain data structures within PDF documents. Attackers can exploit this weakness by creating specially formatted PDF files containing malformed data that causes the application to write beyond the boundaries of allocated memory buffers. This type of vulnerability falls under the CWE-121 buffer overflow category and represents a serious security risk for users who frequently process PDF documents.
The technical implementation of this flaw occurs during the parsing phase of PDF file interpretation where the application fails to properly validate the size and structure of data elements within the document. When a malicious PDF file is processed, the parser attempts to allocate memory for specific data structures but encounters crafted input that exceeds expected boundaries. This leads to memory corruption that can be leveraged by attackers to overwrite adjacent memory locations with malicious code. The vulnerability requires user interaction through either visiting a malicious webpage that hosts the exploit or opening a specially crafted PDF file directly within the application, making it particularly dangerous in environments where users regularly handle untrusted documents.
The operational impact of this vulnerability extends beyond simple code execution capabilities as it allows attackers to operate within the security context of the currently running process. This means that any privileges granted to PDF-XChange Editor are potentially accessible to the attacker, which could include access to sensitive user data, system resources, or even escalation to higher privilege levels depending on how the application is configured. The vulnerability affects a broad range of users who rely on PDF-XChange Editor for document processing, making it an attractive target for threat actors seeking persistent access to corporate networks or personal systems where such software is commonly deployed.
The exploitation of this vulnerability aligns with several techniques outlined in the attack framework including privilege escalation through memory corruption and initial access via malicious document delivery. Organizations should implement immediate mitigations including disabling automatic PDF processing in web browsers, implementing strict file type controls, and ensuring that PDF-XChange Editor is updated to patched versions. According to industry standards and best practices for vulnerability management, this represents a high-severity issue requiring immediate attention through patch management processes and network segmentation to limit potential lateral movement if exploitation occurs. Regular security assessments should include testing for similar buffer overflow vulnerabilities in other document processing applications to prevent similar incidents across the organization's software ecosystem.