CVE-2025-7849

Code execution via null VILinkObj error handling

Published Jul 29, 2025 · Updated Feb 26, 2026

Memory corruption in National Instruments LabVIEW 2025 Q1 and earlier allows context-dependent attackers to execute code through a crafted VI. LabVIEW improperly handles an error when a VILinkObj is null during VI opening, corrupting memory rather than safely rejecting the malformed file. Exploitation requires a user to open the attacker-supplied VI and can execute code in that user's LabVIEW process.

CVSS severity8.5
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in National Instruments LabVIEW 2025 Q1 and earlier allows context-dependent attackers to execute code through a crafted VI. LabVIEW improperly handles an error when a VILinkObj is null during VI opening, corrupting memory rather than safely rejecting the malformed file. Exploitation requires a user to open the attacker-supplied VI and can execute code in that user's LabVIEW process.

The record

CVE
CVE-2025-7849
Published
Jul 29, 2025
Updated
Feb 26, 2026
Vendor
National Instruments
Product
LabVIEW
Classifications
CWE-1285, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record 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 <=22.3.5
  2. Affected versionversion=23.0.0 <=23.3.6
  3. Affected versionversion=24.0.0 <=24.3.3
  4. Affected versionversion=25.0.0 <25.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

National Instruments · LabVIEWversion=0 <=22.3.5; version=23.0.0 <=23.3.6; version=24.0.0 <=24.3.3; version=25.0.0 <25.3.0

Published CVSS scores

8.5National InstrumentsCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8National InstrumentsCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-1285Improper Validation of Specified Index, Position, or Offset in Input
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious 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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