CVE-2025-7849
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 · uneditedA memory corruption vulnerability due to improper error handling when a VILinkObj is null exists in NI LabVIEW that may result in 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 confidenceA memory corruption vulnerability in NI LabVIEW occurs due to improper error handling when a VILinkObj reference is null. When a user opens a specially crafted malicious VI file, the null pointer dereference can be exploited to achieve arbitrary code execution with the privileges of the LabVIEW process.
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.
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Determine installed LabVIEW versionCheck the LabVIEW installation or program files for the version number, typically visible in the LabVIEW development environment startup splash screen or in Add/Remove Programs. NI typically labels versions by year (e.g., LabVIEW 2021, LabVIEW 2022).Affected if The installed version is 2021 or earlier, or is 2022, 2023, 2024, or 2025 (any version through 2025 Q1).
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Identify LabVIEW installations across systemsUse system inventory or software asset management tools to scan for NI LabVIEW installations and record their version numbers.Affected if Any LabVIEW installation matching the affected version ranges is present.
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Review recent VI file openingsExamine system activity logs, endpoint detection tools, or user workflow records for recent instances where LabVIEW was used to open VI files, particularly from network shares, email attachments, or external drives.Affected if Users have opened VI files recently, especially from untrusted or external sources, since the vulnerability triggers upon opening a malicious VI.
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Monitor LabVIEW process executionCheck running processes or use endpoint monitoring to identify if the LabVIEW executable (commonly named LabVIEW.exe or ni LabVIEW.exe) is currently or has recently been active.Affected if The LabVIEW process runs or has run, as exploitation occurs within the LabVIEW process context when a malicious VI is opened.
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Audit VI file handling policiesReview organizational security policies or endpoint controls governing file types permitted to be opened by LabVIEW, particularly .vi file associations and execution restrictions.Affected if There are no restrictions on opening VI files from untrusted sources, meaning the attack surface is open.
A system is affected if it runs any version of LabVIEW from 2021 through 2025 Q1 and users can open VI files, as the vulnerability triggers upon opening a specially crafted malicious VI file.
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 dataOrganizations should upgrade to LabVIEW versions newer than 2025 Q1 once patches are released by NI. Until then, enforce strict policies against opening VI files from untrusted sources and consider running LabVIEW in sandboxed or restricted environments.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-7849 — 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-2025-7849 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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- Version or environment caveats, and links to real fixes
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