CVE-2026-18445

Integer Overflow Vulnerability Resulting in an Out of Bounds Write in NI LabVIEW

State: Published
Severity: 6.9 Medium
Published: Aug 25, 2026
Updated: Aug 31, 2026
Reserved: Jul 30, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N	NI
3.1	6.6 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H	NI

Weaknesses

CWE-190 Integer overflow or wraparound

Affected Products

Product	Versions
LabVIEWNI	before 23.0.0Affected 23.1.0 to before 23.3.10Affected 24.1.0 to before 24.3.7Affected 25.1.0 to before 25.3.5Affected 26.1.0 to before 26.3.1Affected

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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