# CVE-2026-32864: NI LabVIEW out-of-bounds read in mgcore_SH_25_3!aligned_free()

Source: https://junglewise.ai/threats/cve-2026-32864-ni-labview-out-of-bounds-read-in-mgcore-sh-25-3-aligned-free  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-07. Updated: 2026-07-25  
License: CC BY 4.0 with a link back

CVE-2026-32864 · Severity: high · CVSS 7.8 · Published 2026-04-07

NI LabVIEW, a popular system-design platform and development environment for engineers and scientists, is vulnerable to a memory corruption flaw. An attacker could exploit this by tricking a user into opening a specially crafted LabVIEW Virtual Instrument (VI) file. Successful exploitation could allow an attacker to steal sensitive information or take full control of the affected computer.

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

## Quick answers

**Is CVE-2026-32864 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-32864 being exploited in the wild.

**How severe is CVE-2026-32864?** High severity, with a CVSS score of 7.8, published 7 April 2026.

**Which products and versions are affected?** NI Labview 2026 Q1 (26.1.0) and prior versions.

**Is there a fix for CVE-2026-32864?** A patch was published on 2026-04-07. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-32864 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-32864?** 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

An out-of-bounds read vulnerability (CWE-125) exists in NI LabVIEW within the mgcore_SH_25_3!aligned_free() function. The flaw is triggered when the application processes a specially crafted Virtual Instrument (.vi) file. While the primary vulnerability is an out-of-bounds read, the vendor indicates it can lead to memory corruption, potentially resulting in arbitrary code execution or information disclosure. The attack requires local user interaction to open the malicious file. NI has released patches for various versions, including LabVIEW 2026 Q1 Patch 1, 2025 Q3 Patch 4, 2024 Q3 Patch 6, and 2023 Q3 Patch 9.

## Affected products

- NI LabVIEW 2026 Q1 (26.1.0) and prior versions

## Timeline

- 2026-04-07: disclosed
- 2026-04-07: advisory
- 2026-04-07: patched

## References

- [https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/memory-corruption-vulnerabilities-in-ni-labview.html](https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/memory-corruption-vulnerabilities-in-ni-labview.html)

## Related threats

- [NI LabVIEW out-of-bounds write in TDRefCountedPtr](https://junglewise.ai/threats/cve-2026-64204-ni-labview-out-of-bounds-write-in-tdrefcountedptr)
- [NI LabVIEW out-of-bounds read in QualifiedName prepend function](https://junglewise.ai/threats/cve-2026-64203-ni-labview-out-of-bounds-read-in-qualifiedname-prepend-function)
- [NI LabVIEW out-of-bounds read in EnQRunQ function](https://junglewise.ai/threats/cve-2026-64201-ni-labview-out-of-bounds-read-in-enqrunq-function)
- [NI LabVIEW integer overflow resulting in out-of-bounds write](https://junglewise.ai/threats/cve-2026-18445-ni-labview-integer-overflow-resulting-in-out-of-bounds-write)
- [NI LabVIEW integer conversion out-of-bounds read in image loading](https://junglewise.ai/threats/cve-2026-18444-ni-labview-integer-conversion-out-of-bounds-read-in-image-loading)