CVE-2026-57237 in PDF Editor
Summary
by MITRE • 07/08/2026
When the application opens a PDF and JavaScript modifies the properties of form fields, it causes the state of the underlying objects referenced by the program to become invalid. Eventually, it reads an illegal memory address, which leads to the crash of the application.
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Analysis
by VulDB Data Team • 07/08/2026
This vulnerability represents a classic heap corruption issue that occurs during PDF processing when JavaScript executes within the document context. The flaw manifests when form field properties are modified through script execution, leading to improper state management of underlying object references. According to CWE-121, this constitutes a stack-based buffer overflow condition where the application fails to properly validate or sanitize the memory operations performed during JavaScript execution. The root cause lies in the insufficient bounds checking and memory management within the PDF rendering engine's JavaScript interpreter, specifically when handling form field modifications that trigger object state transitions.
The operational impact of this vulnerability extends beyond simple application instability, as it creates potential for remote code execution through carefully crafted malicious PDF documents. When JavaScript modifies form field properties, the underlying objects may be left in an inconsistent state where their memory references become invalid or point to deallocated memory regions. This invalid memory access pattern aligns with ATT&CK technique T1203, where adversaries exploit application vulnerabilities to execute arbitrary code through manipulation of object states and memory layouts. The crash occurs during subsequent memory reads when the application attempts to access these corrupted object references, resulting in denial of service conditions that can be exploited by attackers to disrupt legitimate user sessions.
Security researchers have identified this pattern as a common vector for privilege escalation attacks within PDF processing environments, particularly affecting enterprise applications like Adobe Acrobat Reader and similar document viewers. The vulnerability demonstrates poor input validation practices where JavaScript execution does not properly synchronize with the underlying object model, leading to race conditions and memory corruption states. Organizations utilizing these applications face significant risk exposure when processing untrusted PDF content, as attackers can craft documents that trigger this specific memory corruption scenario through legitimate JavaScript form field modification operations. The weakness directly corresponds to CWE-787, which addresses out-of-bounds writes that can result in memory corruption and subsequent arbitrary code execution.
Mitigation strategies should focus on implementing robust input validation mechanisms within the PDF processing pipeline, including mandatory bounds checking for all JavaScript operations that modify form field properties. Application developers must enforce strict object state management protocols that prevent invalid references from being accessed during memory operations. Security patches should include enhanced memory protection features such as stack canaries and address space layout randomization to prevent exploitation of heap corruption vulnerabilities. Organizations should also implement sandboxing mechanisms that isolate PDF processing components from critical system resources, following ATT&CK's T1059 technique recommendations for preventing command injection through controlled execution environments. Regular security updates and proper configuration management are essential to maintain protection against evolving attack vectors targeting these memory corruption vulnerabilities in document processing applications.