CVE-2025-2633: Out of Bounds Read Vulnerability in NI LabVIEW when loading fonts

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-23 · updated 2026-06-17
Weakness: CWE-1285

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.

Affected products

NI LabVIEW: through 2021; 2022-q1, 2022-q3, 2022-q3_patch1, 2022-q3_patch2, 2022-q3_patch4, 2022-q3_patch5 (+17)

References

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

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