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LabviewApplication · Ni

CVE-2024-6638

MEDIUM · 5.5 CVSS v3.1 Published 2024-07-22
Fix available
A fix is available. Upgrade to after 2021 or later.
See remediation →
58/100
Remediation priority · Elevated
No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
An integer overflow vulnerability due to improper input validation when reading TDMS files in LabVIEW may result in an infinite loop. Successful exploitation requires an attacker to provide a user with a specially crafted TDMS file. This vulnerability affects LabVIEW 2024 Q1 and prior versions.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

An integer overflow in LabVIEW's TDMS file parser, caused by improper input validation, can trigger an infinite loop when processing specially crafted files. The vulnerability is exploitable remotely via file delivery and results in denial of service through resource exhaustion.

MitigationUpdate LabVIEW to a version newer than 2024 Q1 once the vendor patch is released; avoid opening TDMS files from untrusted sources until then.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
LabviewApplication
Affected:<= 2021= 2022= 2023= 2024

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed LabVIEW version
    Open LabVIEW and go to Help > About LabVIEW, or check the installation directory for version information (typically in C:\Program Files\National Instruments\LabVIEW [year]). The version number is displayed in the application title bar or about dialog.
    Affected if The installed version is 2021 or earlier, 2022, 2023, or 2024 (any of these versions listed in the affected range).
  2. Confirm TDMS file processing is in use
    Search for .tdms or .tdms_index files on systems with LabVIEW installed. Check LabVIEW projects and VIs for references to TDMS Open, TDMS Write, or TDMS Read functions by searching for 'TDMS' in the block diagram.
    Affected if TDMS files are being created, read, or processed by LabVIEW applications in the environment.
  3. Identify LabVIEW development or runtime systems
    Review installed software on relevant Windows systems. Look for National Instruments LabVIEW in Add/Remove Programs (appwiz.cpl) or check for LabVIEW runtime engines installed alongside other NI software.
    Affected if LabVIEW (development version or runtime engine) is installed on any system that processes TDMS files from external or untrusted sources.
  4. Check for automated TDMS file processing
    Review any scheduled tasks, services, or workflows that automatically ingest TDMS files from network shares, email attachments, FTP locations, or user upload directories.
    Affected if Automated systems process incoming TDMS files without manual inspection, increasing exposure to specially crafted files.

A system is affected if it runs any affected LabVIEW version (2021 or earlier, 2022, 2023, or 2024) and processes TDMS files, particularly from untrusted or external sources.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 2021
Interim mitigation

Update LabVIEW to a version newer than 2024 Q1 once the vendor patch is released; avoid opening TDMS files from untrusted sources until then.

Recommended fix Moderate confidence

LabVIEW 2024 Q2 or later

  1. Check the current LabVIEW version by opening LabVIEW and selecting Help > About LabVIEW
  2. Identify the installed LabVIEW version number
  3. Navigate to the National Instruments (NI) website at www.ni.com and locate the LabVIEW downloads section
  4. Download LabVIEW 2024 Q2 or later version (or the most recent available version)
  5. Ensure all other NI software and drivers are compatible with the new version before upgrading
  6. Run the installer and follow the prompts to upgrade LabVIEW
  7. After installation, verify the version by checking Help > About LabVIEW to confirm the upgrade was successful
  8. Do not open untrusted or unverified TDMS files in LabVIEW as a general security practice
Caveat Upgrading LabVIEW may require updating existing VIs and ensuring compatibility with other NI software and hardware drivers; thoroughly test critical applications after upgrade

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Labview Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing4.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,900
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-6638 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data