CVE-2026-32861 PUBLISHED

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

Assigner: NI
Reserved: 16.03.2026 Published: 07.04.2026 Updated: 08.04.2026

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.

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 7.8

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	High

CVSS 3.1

CVSS Vector: 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
CVSS Score: 8.5

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	NI
Product	LabVIEW
Versions	Default: unaffected affected from 0 to 23.0.0 (excl.) affected from 23.1.0 to 23.3.9 (excl.) affected from 24.1.0 to 24.3.6 (excl.) affected from 25.1.0 to 25.3.4 (excl.) affected from 26.1.0 to 26.1.1 (excl.)

Credits

Rocco Calvi (@TecR0c) with TecSecurity finder
TrendAI Zero Day Initiative coordinator

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

Problem Types

CWE-787 Out-of-bounds write CWE

Impacts

CAPEC-100