CVE-2022-37366 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 handling of Doc objects. By performing actions in JavaScript, an attacker can trigger a read past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-17727.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 06/19/2026
This vulnerability represents a critical heap-based buffer overflow condition within PDF-XChange Editor that enables remote code execution through crafted malicious documents. The flaw specifically manifests during the processing of Doc objects when JavaScript commands are executed, creating a scenario where memory access occurs beyond the bounds of allocated object boundaries. This type of vulnerability falls under the CWE-125 category for out-of-bounds read conditions, which represents one of the most dangerous classes of memory corruption vulnerabilities in software applications. The vulnerability's exploitation requires user interaction through either visiting a malicious webpage or opening a specially crafted PDF file that contains malicious JavaScript code designed to trigger the buffer overflow condition.
The technical implementation of this vulnerability involves JavaScript-based memory manipulation that allows an attacker to manipulate heap memory structures during document processing. When the PDF viewer encounters a malicious Doc object, the JavaScript engine executes commands that cause the application to read beyond allocated memory boundaries, potentially leading to arbitrary code execution within the context of the running process. This represents a privilege escalation vector since the malicious code executes with the same privileges as the PDF-XChange Editor application itself, typically running with user-level permissions but potentially elevated through system configuration. The vulnerability's exploitation aligns with ATT&CK technique T1059.007 for JavaScript execution and T1068 for local privilege escalation through process manipulation.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise when attackers can leverage additional attack vectors or chain this vulnerability with other exploits. The fact that user interaction is required for exploitation provides some defense-in-depth considerations but also means that phishing campaigns targeting users could be highly effective. Organizations relying on PDF-XChange Editor for document processing face significant risk exposure since PDF documents are commonly shared through email, web portals, and file transfer systems. This vulnerability effectively eliminates the possibility of fully automated attacks against vulnerable systems while still maintaining a substantial threat level due to social engineering requirements that attackers can readily implement.
Mitigation strategies should focus on immediate patch management and user education initiatives to prevent exploitation attempts. Organizations must prioritize updating to patched versions of PDF-XChange Editor as released by the vendor, while implementing additional security controls such as web application firewalls and email filtering systems to block potentially malicious PDF content. Network segmentation and privilege separation can help limit the impact if exploitation occurs, ensuring that even if an attacker successfully executes code, they cannot easily escalate privileges or move laterally through the network infrastructure. Security monitoring should include detection of unusual JavaScript execution patterns within PDF processing environments, and regular security assessments should verify that no other similar vulnerabilities exist in the application's JavaScript engine or document parsing components. The vulnerability's classification as a remote code execution flaw requires comprehensive incident response planning to address potential compromise scenarios and ensure rapid remediation when exploitation attempts are detected.