NI LabVIEW up to 22.3.5/23.3.6/24.3.3/25.2.x lvre!UDecStrToNum improper validation of specified index, position, or offset in input

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability was found in NI LabVIEW up to 22.3.5/23.3.6/24.3.3/25.2.x. It has been classified as critical. This vulnerability affects the function lvre!UDecStrToNum. The manipulation leads to improper validation of specified index, position, or offset in input. This vulnerability is documented as CVE-2025-2633. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in NI LabVIEW up to 22.3.5/23.3.6/24.3.3/25.2.x. This issue affects the function lvre!UDecStrToNum. The manipulation with an unknown input leads to a improper validation of specified index, position, or offset in input vulnerability. Using CWE to declare the problem leads to CWE-1285. The product receives input that is expected to specify an index, position, or offset into an indexable resource such as a buffer or file, but it does not validate or incorrectly validates that the specified index/position/offset has the required properties. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Out of bounds read vulnerability due to improper bounds checking in NI LabVIEW in lvre!UDecStrToNum that may result in information disclosure or arbitrary code execution. Successful exploitation requires an attacker to get a user to open a specially crafted VI. This vulnerability affects NI LabVIEW 2025 Q1 and prior versions.

The weakness was released by Michael Heinzl. The advisory is shared at ni.com. The identification of this vulnerability is CVE-2025-2633 since 03/21/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 243275 (National Instruments LabVIEW < 2025 Q3 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 25.3.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (243275) and EUVD (EUVD-2025-22461). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper validation of specified index, position, or offset in input
CWE: CWE-1285
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 243275
Nessus Name: National Instruments LabVIEW < 2025 Q3 Multiple Vulnerabilities

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: LabVIEW 25.3.0

Timelineinfo

03/21/2025 CVE reserved
07/23/2025 +123 days Advisory disclosed
07/23/2025 +0 days VulDB entry created
08/20/2025 +28 days VulDB entry last update

Sourcesinfo

Advisory: ni.com
Researcher: Michael Heinzl
Status: Confirmed

CVE: CVE-2025-2633 (🔒)
GCVE (CVE): GCVE-0-2025-2633
GCVE (VulDB): GCVE-100-317441
EUVD: 🔒

Entryinfo

Created: 07/23/2025 18:24
Updated: 08/20/2025 03:19
Changes: 07/23/2025 18:24 (75), 07/23/2025 19:19 (1), 08/01/2025 23:22 (2), 08/20/2025 03:19 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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