# CVE-2026-18445: NI LabVIEW integer overflow resulting in out-of-bounds write

Source: https://junglewise.ai/threats/cve-2026-18445-ni-labview-integer-overflow-resulting-in-out-of-bounds-write  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-25. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-18445 · Severity: medium · CVSS 6.6 · Published 2026-08-25

NI LabVIEW is a graphical programming environment used by engineers and scientists to develop test, measurement, and automation applications. An integer overflow vulnerability can allow attackers to write data outside a buffer's intended boundaries, potentially leading to unauthorized information access or execution of malicious code when a user opens a specially crafted VI project file. This could compromise systems used for critical testing and control applications.

Technologies: [NI Labview](https://junglewise.ai/threats/technologies/labview). Vendors: [NI](https://junglewise.ai/threats/vendors/ni).

## Quick answers

**Is CVE-2026-18445 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18445 being exploited in the wild.

**How severe is CVE-2026-18445?** Medium severity, with a CVSS score of 6.6, published 25 August 2026.

**Which products and versions are affected?** NI Labview 2026 Q3 and prior.

**Is there a fix for CVE-2026-18445?** A patch was published on 2026-09-01: Patches available for LabVIEW 2023 Q3 Patch 10, 2024 Q3 Patch 7, 2025 Q3 Patch 5, and 2026 Q3 Patch 1 or later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-18445 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-18445?** Check whether you run NI Labview at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an integer overflow (CWE-190) in NI LabVIEW that results in an out-of-bounds write condition. The attack requires a specially crafted VI file and user interaction (the user must open the file), making it a local attack vector with no privilege requirement. Successful exploitation can result in information disclosure (C:L) and arbitrary code execution (I:L via CVSS 3.1, or I:H via CVSS 4.0), giving attackers the ability to execute code in the context of the LabVIEW process. Patches are available through NI Package Manager, Software Downloads, or NI Update Service for affected versions (2026 Q3 and prior; specific patched versions provided for 2023–2026).

## Affected products

- NI LabVIEW 2026 Q3 and prior

## Timeline

- 2026-08-25: disclosed
- 2026-09-01: patched: Patches available for LabVIEW 2023 Q3 Patch 10, 2024 Q3 Patch 7, 2025 Q3 Patch 5, and 2026 Q3 Patch 1 or later

## 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](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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