---
id: CVE-2026-64196
title: "There is an out-of-bounds write vulnerability in DASYLab\_due to improper validation of user-supplied data, resulting in a write past the end of an allocated heap.\_Successful exploitation requires an attacker to get a user to open a speci…"
summary: "There is an out-of-bounds write vulnerability in DASYLab\_due to improper validation of user-supplied data, resulting in a write past the end of an allocated heap.\_Successful exploitation requires an attacker to get a user to open a speci…"
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
vendor: ni
product: dasylab
affected:
  - dasylab < 2026.0
  - dasylab = 2026.0
patched:
  - dasylab 2026.0
published: '2026-09-03'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T18:33:39.557'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64196'
references:
  - url: >-
      https://www.measx.com/en/service/productsecurity/security-updates-for-measx-software/159-securityupdates/1071-out-of-bounds-write-vulnerabilities-in-dasylab-2.html
    label: security@ni.com
tags:
  - nvd
epss: 0.00107
epssPercentile: 0.01289
ingestedAt: '2026-09-08T20:10:03.160Z'
---

## Overview

There is an out-of-bounds write vulnerability in DASYLab due to improper validation of user-supplied data, resulting in a write past the end of an allocated heap. Successful exploitation requires an attacker to get a user to open a specially crafted .DSB file.  This issue affects all versions before 2026.0.0.

## Affected

- `dasylab < 2026.0`
- `dasylab = 2026.0`

## Remediation

Upgrade past the affected range:

- `dasylab 2026.0`