CVE-2026-18445: Integer Overflow Vulnerability Resulting in an Out of Bounds Write in NI LabVIEW

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-25 · updated 2026-09-08
Weakness: CWE-190

Description

There is an integer overflow vulnerability resulting in an out-of-bounds write recently discovered in NI LabVIEW. This may result in information disclosure or arbitrary code execution.  Successful exploitation requires an attacker to get a user to open a specially crafted VI file.  This vulnerability affects NI LabVIEW 2026 Q3 and prior versions.

Affected products

NI LabVIEW: through 2022; 2023-q1, 2023-q3, 2023-q3_patch1, 2023-q3_patch2, 2023-q3_patch3, 2023-q3_patch4 (+28)

References

https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/integer-overflow-vulnerability-resulting-in-an-out-of-bounds-write-in-ni-labview.html

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