# CVE-2026-18444: Integer Conversion Vulnerability Resulting in an Out of Bounds Read in NI LabVIEW

Status: published. Published: 2026-08-25. Updated: 2026-11-04.

There is an integer conversion vulnerability resulting in an out-of-bounds read when loading images 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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: security@ni.com) — https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/integer-conversion-vulnerability-resulting-in-an-out-of-bounds-read-in-ni-labview.html

## Affected products and versions

- NI / LabVIEW: ≥ 0; < 23.0.0 (affected, semver); ≥ 23.1.0; < 23.3.10 (affected, semver); ≥ 24.1.0; < 24.3.7 (affected, semver); ≥ 25.1.0; < 25.3.5 (affected, semver); ≥ 26.1.0; < 26.3.1 (affected, semver). Source: CNA: NI

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:ni:labview:*:*:*:*:*:*:*:*",
            "versionEndIncluding": "2022",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch2:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch3:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch4:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch5:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch6:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch7:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch8:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2023:q3_patch9:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:-:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q1_patch1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q3:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q3_patch1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q3_patch2:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q3_patch3:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q3_patch4:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q3_patch5:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2024:q3_patch6:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q1_patch1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q1_patch2:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q1_patch3:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q3:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q3_patch1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q3_patch2:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q3_patch3:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2025:q3_patch4:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2026:q1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2026:q1_patch1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2026:q1_patch2:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ni:labview:2026:q3:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 6.6 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H; source: CNA: NI

- CVSS 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; source: CNA: NI

- CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: security@ni.com

- CVSS 3.1: 7.8 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: NVD: nvd@nist.gov

- CVSS 3.1: 6.6 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H; source: NVD: security@ni.com

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-03; percentile 7.50%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-195

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/integer-conversion-vulnerability-resulting-in-an-out-of-bounds-read-in-ni-labview.html (CNA: NI)

- https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/integer-conversion-vulnerability-resulting-in-an-out-of-bounds-read-in-ni-labview.html (security@ni.com; Patch, Vendor Advisory)

## Provenance

- CNA: NI: https://www.cve.org/CVERecord?id=CVE-2026-18444; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18444; retrieved 2026-11-04; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-18444; retrieved 2026-11-03; source updated Not reported

Revision: 7d50140136c7837e1a203dd12d46caf6ae287f3f8fcac8724b766c69cebe4140

Canonical: https://y2.dev/cve/CVE-2026-18444

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