Local privilege elevation via heap buffer overflow
Published May 12, 2026 · Updated May 12, 2026
Heap-based buffer overflow in Microsoft .NET and .NET Framework allows local users to elevate privileges via unspecified input. Microsoft has not disclosed the affected component, the input format, or the operation that writes beyond the allocated heap buffer. Exploitation requires user interaction; successful use grants elevated access and can expose or alter data or interrupt the process.
Summary
What happened
Heap-based buffer overflow in Microsoft .NET and .NET Framework allows local users to elevate privileges via unspecified input. Microsoft has not disclosed the affected component, the input format, or the operation that writes beyond the allocated heap buffer. Exploitation requires user interaction; successful use grants elevated access and can expose or alter data or interrupt the process.
The record
- CVE
- CVE-2026-32177
- Published
- May 12, 2026
- Updated
- May 12, 2026
- Vendor
- Microsoft
- Product
- Microsoft Visual Studio 2019
- Classifications
- CWE-122, CWE-20, T1068
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 12, 2026CVE publishedPublication date reported by the CVE source.
- May 12, 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=16.11.0 <16.11.56
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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