Vulnerability · Published Apr 7, 2026 · Assigned by NI

CVE-2026-32861Out-of-Bounds Write Vulnerability in NI LabVIEW when loading lvclass file

High 7.8

In plain English

A high-severity out-of-bounds write in LabVIEW from NI. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.2%top 86.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

There is a memory corruption vulnerability due to an out-of-bounds write when loading a corrupted LVCLASS file in NI LabVIEW. This vulnerability may result in information disclosure or arbitrary code execution. Successful exploitation requires an attacker to get a user to open a specially crafted .lvclass file. This vulnerability affects NI LabVIEW 2026 Q1 (26.1.0) and prior versions.

Affected products (as reported)

Vendor	Product	Versions
NI	LabVIEW	0 – before 23.0.023.1.0 – before 23.3.924.1.0 – before 24.3.625.1.0 – before 25.3.426.1.0 – before 26.1.1

Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/lv-class-file-parsing-memory-corruption-vulnerability-in-ni-labview.html