CVE-2025-2633

Out of Bounds Read Vulnerability in NI LabVIEW when loading fonts

High7.3EPSS 0.18%

Published: 23 Jul 2025
Updated: 23 Jul 2025
Reserved: 21 Mar 2025
Assigned by: NI

Description

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.

Scores

CVSS scores of CVE-2025-2633, by who scored it
Scored by	CVSS	Score	Vector
NICNA (assigner)	4.0	High7.3	CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
NICNA (assigner)	3.1	High7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVDNVD · Analyzed	4.0	High7.3	CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.18% · top 92% of all CVEs (6 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.

Weakness

CWE-1285 Improper Validation of Specified Index, Position, or Offset in Input (opens in a new tab)All about CWE-1285 and its CVEs

Affected products

NI · LabVIEW
- affected ≤ 22.3.5
- affected 23.0.0 – ≤ 23.3.6
- affected 24.0.0 – ≤ 24.3.3
- affected 25.0.0 – < 25.3.0

References (1)

https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/out-of-bounds-read-vulnerabilities-in-ni-labview.html (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2025-2633](https://trackcve.app/badge/CVE-2025-2633.svg)](https://trackcve.app/cve/CVE-2025-2633)

Record last updated 23 Jul 2025, 17:23 UTC.