Code execution via aligned_free out-of-bounds write
Published Aug 25, 2026 · Updated Aug 26, 2026
An out-of-bounds write in NI LabVIEW 26.3.0 and earlier allows attackers to disclose data or execute code through a crafted VI. While loading the file, aligned_free() writes outside the intended memory bounds; NI has not disclosed the malformed field or allocation error that triggers the write. A user must open the malicious file; successful exploitation can expose process data or run attacker-controlled code with the user's privileges.
Summary
What happened
An out-of-bounds write in NI LabVIEW 26.3.0 and earlier allows attackers to disclose data or execute code through a crafted VI. While loading the file, aligned_free() writes outside the intended memory bounds; NI has not disclosed the malformed field or allocation error that triggers the write. A user must open the malicious file; successful exploitation can expose process data or run attacker-controlled code with the user's privileges.
The record
- CVE
- CVE-2026-16233
- Published
- Aug 25, 2026
- Updated
- Aug 26, 2026
- Vendor
- National Instruments
- Product
- LabVIEW
- Classifications
- CWE-787, CAPEC-100, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 25, 2026CVE publishedPublication date reported by the CVE source.
- Aug 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <23.0.0
- Affected versionversion=23.1.0 <23.3.10
- Affected versionversion=24.1.0 <24.3.7
- Affected versionversion=25.1.0 <25.3.5
- Affected versionversion=26.1.0 <26.3.1
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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