CVE-2026-32861

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

State: Published
Severity: 8.5 High
Published: Apr 7, 2026
Updated: Apr 8, 2026
Reserved: Mar 16, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	NI
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	NI

Weaknesses

CWE-787 Out-of-bounds write

Affected Products

Product	Versions
LabVIEWNI	before 23.0.0Affected 23.1.0 to before 23.3.9Affected 24.1.0 to before 24.3.6Affected 25.1.0 to before 25.3.4Affected 26.1.0 to before 26.1.1Affected

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

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