CVE-2024-6638

Application hang via overflowing TDMS file calculation

Published Jul 22, 2024 · Updated Aug 1, 2024

Integer overflow in NI LabVIEW 2024 Q1 and earlier allows attackers to hang the application by supplying a crafted TDMS file. The TDMS reader insufficiently validates file data, allowing an integer calculation to overflow and enter an infinite processing loop. Exploitation requires a user to open the crafted file; the documented consequence is an availability-only application hang.

CVSS severity5.5
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in NI LabVIEW 2024 Q1 and earlier allows attackers to hang the application by supplying a crafted TDMS file. The TDMS reader insufficiently validates file data, allowing an integer calculation to overflow and enter an infinite processing loop. Exploitation requires a user to open the crafted file; the documented consequence is an availability-only application hang.

The record

CVE
CVE-2024-6638
Published
Jul 22, 2024
Updated
Aug 1, 2024
Vendor
National Instruments
Product
LabVIEW
Classifications
CWE-190, T1499, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=24.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

National Instruments · LabVIEWversion=0 <=24.1

Published CVSS scores

5.5National InstrumentsCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499Endpoint Denial of Service
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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