.NET
CVE-2026-32177 — .NET Elevation of Privilege Vulnerability
Executive Summary
Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
Overview
7.3
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
Low
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.4
EPSS Score
0.00551
probability of exploitation in the next 30 days
0.43377 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
36 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| .NET 10.0 installed on Windows | 5093446 (Security Update) |
Important | Elevation of Privilege | Maybe |
| .NET 8.0 installed on Windows | 5093447 (Security Update) |
Important | Elevation of Privilege | Maybe |
| .NET 9.0 installed on Windows | 5093448 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems | 5087061 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | 5087061 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | 5087061 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for ARM64-based Systems | 5087066 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | 5087066 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | 5087064 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | 5087064 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | 5087064 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | 5087066 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | 5087068 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems | 5087053 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems | 5087053 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems | 5087053 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems | 5087058 (Security Update) |
Important | Elevation of Privilege | Yes |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems | 5087054 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems | 5087054 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for ARM64-based Systems | 5087051 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for x64-based Systems | 5087051 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems | 5087055 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 26H1 for x64-based Systems | 5087055 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 | 5087059 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2025 | 5087051 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | 5087048 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | 5087049 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | 5087062 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | 5087063 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | 5087065 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 | 5087067 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | 5087069 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft .NET Framework 4.8 on Windows Server 2016 | 5087065 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Visual Studio 2022 version 17.12 | Release Notes (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Visual Studio 2022 version 17.14 | Release Notes (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft Visual Studio 2026 version 18.5 | Release Notes (Security Update) |
Important | Elevation of Privilege | Maybe |
Patches
21 patches
| Article | Type | Restart |
|---|---|---|
5093446 |
Security Update | Maybe |
5093447 |
Security Update | Maybe |
5093448 |
Security Update | Maybe |
5087061 |
Security Update | Maybe |
5087066 |
Security Update | Maybe |
5087064 |
Security Update | Maybe |
5087068 |
Security Update | Maybe |
5087053 |
Security Update | Maybe |
5087058 |
Security Update | Yes |
5087054 |
Security Update | Maybe |
5087051 |
Security Update | Maybe |
5087055 |
Security Update | Maybe |
5087059 |
Security Update | Maybe |
5087048 |
Security Update | Maybe |
5087049 |
Security Update | Maybe |
5087062 |
Security Update | Maybe |
5087063 |
Security Update | Maybe |
5087065 |
Security Update | Maybe |
5087067 |
Security Update | Maybe |
5087069 |
Security Update | Maybe |
Release Notes |
Security Update | Maybe |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
Ky0toFu
References
On This Page