CVE-2025-6034: Out of Bounds Read in DefaultFontOptions() in NI Circuit Design Suite

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: 2025-09-30 · updated 2026-06-17
Weakness: CWE-125

Description

There is a memory corruption vulnerability due to an out of bounds read in DefaultFontOptions() when using SymbolEditor in NI Circuit Design Suite. This vulnerability may result in information disclosure or arbitrary code execution. Successful exploitation requires an attacker to get a user to open a specially crafted .sym file. This vulnerability affects NI Circuit Design Suite 14.3.1 and prior versions.

Affected products

NI Circuit Design Suite: before 14.3.2 — fixed in 14.3.2

How to fix

Upgrade to a fixed version: NI Circuit Design Suite 14.3.2. Check the vendor advisory for mitigations.

References

https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/improper-input-validation-causes-memory-corruption-vulnerabilities-in-circuit-design-suite.html

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