CVE-2025-2633

Code execution via improper bounds checking

Published Jul 23, 2025 · Updated Jul 23, 2025

Out-of-bounds read in lvre!UDecStrToNum in NI LabVIEW 2025 Q1 and earlier allows attackers to disclose data or execute code via a crafted VI. The lvre!UDecStrToNum routine reads outside its intended memory bounds because it fails to validate an input-supplied index, position, or offset. A user must open the file; successful processing exposes process memory or permits code execution in the user's context.

CVSS severity7.8
High
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

Out-of-bounds read in lvre!UDecStrToNum in NI LabVIEW 2025 Q1 and earlier allows attackers to disclose data or execute code via a crafted VI. The lvre!UDecStrToNum routine reads outside its intended memory bounds because it fails to validate an input-supplied index, position, or offset. A user must open the file; successful processing exposes process memory or permits code execution in the user's context.

The record

CVE
CVE-2025-2633
Published
Jul 23, 2025
Updated
Jul 23, 2025
Vendor
National Instruments
Product
LabVIEW
Classifications
CWE-119, CWE-1285, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 2025Record 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

7.1National InstrumentsCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/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
7.8CISACVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
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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