CVE-2025-6034
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThere 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA memory corruption vulnerability exists in NI Circuit Design Suite's SymbolEditor component due to an out of bounds read in the DefaultFontOptions() function. Successful exploitation requires a user to open a specially crafted .sym file, which can lead to information disclosure or arbitrary code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 14.3.2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify NI Circuit Design Suite installationCheck the program's version through the Windows Add/Remove Programs panel, the application Help > About menu, or by locating the main executable (typically niCircuitDesignSuite.exe or similar) and viewing its file propertiesAffected if The installed version is below 14.3.2 (any version prior to 14.3.2 is affected)
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Verify SymbolEditor component presenceLocate the SymbolEditor executable or library file within the NI Circuit Design Suite installation directory - commonly found in a bin or program subfolderAffected if The SymbolEditor component exists and is accessible on the system
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Check for .sym file associationExamine Windows registry or application settings to determine if .sym files are registered to open with NI Circuit Design Suite or its SymbolEditor componentAffected if The .sym file extension is associated with NI Circuit Design Suite or SymbolEditor, meaning the application will attempt to parse these files
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Review recent .sym file activityCheck the Windows recent files list, Jump lists, or the application's recent files history for any .sym files that may have been openedAffected if Any .sym files have been opened using the affected application version
A system is affected if NI Circuit Design Suite version 14.3.1 or earlier is installed and the SymbolEditor component is present, since the vulnerability triggers when a specially crafted .sym file is opened in the DefaultFontOptions() function.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped14.3.2
Update NI Circuit Design Suite to a version newer than 14.3.1 when a patch becomes available. Avoid opening .sym files from untrusted sources until the update is applied.
14.3.2
- Confirm the current installed version of NI Circuit Design Suite
- Back up any custom .sym symbol files and project configurations
- Uninstall the current version of NI Circuit Design Suite
- Download NI Circuit Design Suite version 14.3.2 or later from the official NI website (www.ni.com)
- Install version 14.3.2 following standard NI installation procedures
- Verify the installation completed successfully and the version is correct
- Restore backed-up custom symbol files and validate they load correctly in SymbolEditor
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-6034 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-6034 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data