Attack Chain

1. Attacker crafts a malicious LabVIEW VI file (.vi) containing a payload designed to trigger the out-of-bounds write in ResFileFactory::InitResourceMgr().
2. The attacker delivers the malicious VI file to a target user, potentially through social engineering or other means.
3. The user opens the malicious VI file within a vulnerable version of NI LabVIEW (2026 Q1 (26.1.0) or prior).
4. LabVIEW attempts to parse the resource data within the VI file, leading to the execution of the ResFileFactory::InitResourceMgr() function.
5. The crafted payload triggers the out-of-bounds write vulnerability in ResFileFactory::InitResourceMgr(), corrupting memory.
6. Depending on the payload, this memory corruption can lead to either information disclosure (reading sensitive data from memory) or arbitrary code execution.
7. If the attacker achieves code execution, they can gain control of the LabVIEW process.
8. The attacker can then leverage the compromised LabVIEW process to perform further actions, such as installing malware, exfiltrating data, or disrupting system operations.

Impact

Successful exploitation of CVE-2026-32862 allows an attacker to achieve arbitrary code execution or information disclosure on systems running vulnerable versions of NI LabVIEW. The impact of this vulnerability is significant, as it can lead to complete system compromise, data theft, and disruption of critical processes controlled by LabVIEW. The vulnerability is especially concerning for organizations that rely on LabVIEW for critical infrastructure, manufacturing, and research applications.

Recommendation

• Apply the security patch provided by National Instruments to address CVE-2026-32862 in NI LabVIEW versions 2026 Q1 (26.1.0) and prior.
• Deploy the Sigma rule Detect Suspicious LabVIEW File Opening to identify potential exploitation attempts by monitoring process creation events related to LabVIEW and VI file opening.
• Educate users on the risks of opening VI files from untrusted sources to prevent social engineering attacks.
• Enable process monitoring and logging (e.g., Sysmon) to capture detailed information about process execution and file access for forensic analysis.