CVE-2025-2633
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 · uneditedOut 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.
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 confidenceAn out-of-bounds read vulnerability exists in the lvre!UDecStrToNum function of NI LabVIEW due to improper bounds checking when parsing string data to numbers. This improper validation allows reading memory beyond allocated buffers, potentially exposing sensitive information or enabling arbitrary code execution when a user opens a specially crafted VI file.
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<= 2021= 2022= 2023= 2024= 2025CVSS 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.
-
Verify NI LabVIEW installationCheck for LabVIEW installation by looking for the application in typical installation paths such as C:\Program Files\National Instruments\LabVIEW <version>\ or C:\Program Files (x86)\National Instruments\LabVIEW <version>\, or by searching for labview.exe in the system.Affected if LabVIEW is installed on the system.
-
Identify installed LabVIEW versionOpen LabVIEW and navigate to Help > About LabVIEW, or right-click the labview.exe file, select Properties, and check the Version tab. Alternatively, check the version folder name in the installation directory.Affected if The installed version matches one of the affected versions: 2021 (any subversion), 2022, 2023, 2024, or 2025.
-
Confirm vulnerable component presenceVerify that the lvre.dll library exists in the LabVIEW installation directory, typically found in the labview\resource\ or labview\bin\ folder.Affected if The lvre.dll file is present in the LabVIEW installation directory.
-
Check for untrusted VI file handlingReview whether the LabVIEW environment is configured to automatically open VI files from external or untrusted sources, or if users commonly receive and open VI files from external parties.Affected if Users routinely open VI files from untrusted or unknown sources without prior verification.
You are affected if NI LabVIEW version 2021 through 2025 is installed and users open VI files from untrusted sources, as the vulnerability triggers when parsing specially crafted VI files.
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.
From vendor dataUsers should refrain from opening untrusted or unverified VI files from unknown sources. Organizations should monitor for NI LabVIEW security updates and apply patches once available.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-2633 — 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-2025-2633 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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