CVE-2026-2034 in Sante DICOM Viewer Pro
Summary
by MITRE • 02/21/2026
Sante DICOM Viewer Pro DCM File Parsing Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Sante DICOM Viewer Pro. 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 DCM files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28129.
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Analysis
by VulDB Data Team • 02/27/2026
The vulnerability identified as CVE-2026-2034 represents a critical buffer overflow flaw within Sante DICOM Viewer Pro software that enables remote code execution when processing specially crafted DCM files. This security weakness resides in the application's file parsing mechanism and specifically affects the handling of DICOM (Digital Imaging and Communications in Medicine) format files commonly used in medical imaging environments. The vulnerability operates through a classic buffer overflow condition where insufficient input validation allows malicious data to overwrite adjacent memory locations, potentially leading to arbitrary code execution with the privileges of the affected application process.
The technical implementation of this vulnerability stems from inadequate bounds checking during the parsing of DCM file structures. When the Sante DICOM Viewer Pro application processes a maliciously formatted DCM file, it fails to properly validate the length of user-supplied data before copying it into fixed-size memory buffers. This fundamental flaw in input sanitization creates an exploitable condition where an attacker can craft a DCM file containing oversized data sequences that exceed the allocated buffer space, causing memory corruption and potential execution flow redirection. The vulnerability is classified under CWE-121 as a stack-based buffer overflow, representing a well-known attack vector that has been extensively documented in cybersecurity literature and exploited in numerous real-world scenarios.
The operational impact of this vulnerability extends beyond typical application-level compromises to potentially affect critical healthcare infrastructure and medical imaging systems. Attackers can leverage this vulnerability through web-based delivery mechanisms or by enticing users to open malicious DCM files, requiring only a single interaction from the victim to achieve code execution. The attack surface is particularly concerning in healthcare environments where DICOM viewers are frequently used to examine medical images, and where the security of imaging systems directly impacts patient care and data privacy. The vulnerability's remote exploitation capability means that attackers can potentially compromise systems without requiring physical access or local network presence, making it particularly dangerous in enterprise and healthcare settings where medical imaging systems may be exposed to external networks.
Mitigation strategies for CVE-2026-2034 should focus on immediate patch management and operational security measures to protect against exploitation attempts. Organizations should prioritize applying vendor-provided security updates and patches as soon as they become available, while simultaneously implementing network segmentation and access controls to limit exposure of vulnerable systems. Additional protective measures include deploying file validation mechanisms that can detect and block malformed DICOM files, implementing application whitelisting policies that restrict execution of unauthorized software, and establishing monitoring procedures to detect suspicious file access patterns. Security professionals should also consider implementing network-based intrusion detection systems that can identify potential exploitation attempts targeting this specific vulnerability. The ATT&CK framework categorizes this vulnerability under T1203 as Exploitation for Execution, highlighting the need for comprehensive endpoint protection and application hardening measures to prevent successful exploitation attempts.