CVE-2026-92176 in PDF Architect
Summary
by MITRE • 09/15/2026
pdfforge PDF Architect App Object Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of pdfforge PDF Architect. 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 App objects. The issue results from the lack of proper validation of user-supplied data, which can result in a read 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-28570.
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Analysis
by VulDB Data Team • 09/15/2026
The vulnerability identified as ZDI-CAN-28570 represents a critical security flaw within pdfforge PDF Architect, specifically affecting how the application handles App objects during document processing operations. This defect is classified fundamentally as an out-of-bounds read condition, which falls under the Common Weakness Enumeration category CWE-126. The core technical issue stems from insufficient validation of user-supplied data when parsing or rendering specific elements within a PDF file. When the software processes these malformed inputs, it fails to correctly verify buffer boundaries before attempting to access memory locations associated with App objects. This lack of rigorous bounds checking allows the application to read beyond the allocated limits of a designated memory buffer, leading to an out-of-bounds read scenario that can destabilize the execution environment and expose sensitive memory contents or alter control flow in unintended ways.
From an operational perspective, this vulnerability poses a severe risk because it enables remote code execution within the context of the current process running PDF Architect. Although user interaction is required for exploitation—meaning the target must actively open a maliciously crafted file or visit a specially constructed web page—the ease with which such files can be distributed via phishing campaigns or compromised websites makes this attack vector highly effective. Once triggered, the out-of-bounds read condition allows an attacker to manipulate program execution flow, potentially leading to arbitrary code execution. This capability aligns with ATT&CK technique T1203, which covers exploitation for client-side execution, highlighting how attackers leverage software vulnerabilities in end-user applications to gain initial access or escalate privileges on a victim's system without requiring administrative rights initially.
The impact of this vulnerability extends beyond simple data leakage; it compromises the integrity and availability of the target environment by allowing unauthorized code injection. An attacker leveraging this flaw could install malware, exfiltrate sensitive documents stored locally, or use the compromised application as a pivot point for further network intrusion. Given that PDF Architect is often used in professional environments where document handling is frequent, the potential attack surface is significant. The requirement for user interaction does not mitigate the severity but rather shifts the burden of defense to awareness and technical controls such as sandboxing or strict file type filtering.
To mitigate this risk, organizations should ensure that pdfforge PDF Architect is updated to the latest version where these validation checks have been corrected by the vendor. In environments where immediate patching is not feasible, implementing application whitelisting can prevent unauthorized scripts from executing after exploitation attempts. Additionally, restricting user permissions to standard accounts with limited privileges reduces the potential impact of successful code execution. Security teams should also monitor for unusual process behavior originating from PDF-related applications and consider deploying endpoint detection and response solutions capable of identifying memory corruption anomalies associated with out-of-bounds reads. Regular security awareness training regarding opening untrusted documents remains a critical layer of defense against this type of social engineering-driven exploitation vector.