CVE-2026-0956: NI DASYLab RCE Vulnerability

CVE-2026-0956 Overview

A memory corruption vulnerability exists in Digilent DASYLab due to an out-of-bounds read condition when processing corrupted files. This vulnerability allows attackers to potentially disclose sensitive information or achieve arbitrary code execution on affected systems. The vulnerability requires user interaction, as victims must be convinced to open a specially crafted malicious file.

Critical Impact

Successful exploitation of this out-of-bounds read vulnerability can result in information disclosure or arbitrary code execution, potentially giving attackers full control over affected systems running DASYLab.

Affected Products

• Digilent DASYLab (all versions)
• NI DASYLab - all builds and releases
• Systems utilizing DASYLab for data acquisition and analysis workflows

Discovery Timeline

• 2026-03-13 - CVE-2026-0956 published to NVD
• 2026-03-19 - Last updated in NVD database

Technical Details for CVE-2026-0956

Vulnerability Analysis

This vulnerability stems from improper memory handling during file parsing operations in Digilent DASYLab. When the application attempts to load a corrupted or maliciously crafted file, it fails to properly validate the boundaries of data being read from memory. This out-of-bounds read condition (CWE-125) occurs because the application does not adequately check that requested memory access falls within allocated buffer limits.

The local attack vector requires an attacker to deliver a malicious file to the victim, typically through social engineering tactics such as phishing emails with malicious attachments or hosting crafted files on compromised websites. Once the victim opens the file in DASYLab, the memory corruption occurs during the parsing phase.

Root Cause

The root cause is insufficient bounds checking during file loading operations. When DASYLab parses file contents, it reads data into memory buffers without properly validating that the read operations stay within the allocated memory boundaries. This allows read operations to access memory locations beyond the intended buffer, potentially exposing sensitive data or corrupting program state in ways that enable code execution.

Attack Vector

The attack requires local access and user interaction to succeed. An attacker must craft a malicious DASYLab-compatible file that triggers the out-of-bounds read condition during parsing. The attack chain typically follows this pattern:

1. Attacker creates a specially crafted file designed to exploit the parsing vulnerability
2. The malicious file is delivered to the victim via email, file sharing, or other distribution methods
3. Victim opens the file in DASYLab, triggering the out-of-bounds read
4. The vulnerability results in information disclosure or arbitrary code execution

The vulnerability affects all versions of Digilent DASYLab, meaning no safe version exists without applying vendor-provided mitigations.

Detection Methods for CVE-2026-0956

Indicators of Compromise

• Unexpected DASYLab application crashes or abnormal termination during file loading operations
• Memory access violations or segmentation faults in DASYLab processes
• Unusual process behavior following the opening of DASYLab project files from untrusted sources
• Signs of data exfiltration or unexpected network connections originating from DASYLab processes

Detection Strategies

• Monitor for DASYLab process crashes and memory violations using endpoint detection tools
• Implement file integrity monitoring on systems where DASYLab is installed
• Deploy application whitelisting to prevent unauthorized code execution following exploitation
• Use behavioral analysis to detect anomalous activity from DASYLab processes

Monitoring Recommendations

• Enable detailed logging for file access operations on DASYLab installations
• Configure alerts for memory violation exceptions in DASYLab processes
• Monitor for suspicious file downloads targeting DASYLab file formats
• Review Windows Event Logs for application crash events related to DASYLab

How to Mitigate CVE-2026-0956

Immediate Actions Required

• Review the NI Security Advisory for the latest guidance and patches
• Restrict DASYLab file handling to only trusted sources and validated files
• Implement strict email filtering to block potentially malicious attachments
• Educate users about the risks of opening files from unknown or untrusted sources
• Consider isolating DASYLab installations in sandboxed or virtualized environments

Patch Information

NI has published a security advisory addressing this vulnerability. Organizations should consult the NI Security Advisory on Vulnerabilities for specific patch availability and installation instructions. Given that all versions are affected, applying the vendor-recommended updates or mitigations is critical.

Workarounds

• Only open DASYLab files from verified and trusted sources
• Implement network segmentation to isolate systems running DASYLab from critical infrastructure
• Deploy endpoint protection solutions capable of detecting memory corruption exploits
• Use application sandboxing to limit the impact of potential exploitation
• Consider disabling or restricting DASYLab usage until patches are applied