CVE-2026-69439— .NET and Visual Studio Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft .NET 10.0
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
.NET 和 Visual Studio 中的堆缓冲区溢出漏洞，允许未经授权的攻击者通过网络提升权限。
Possible ATT&CK Techniques 2 AI
T1069 · Permission Groups Discovery T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | .NET 10.0 | 10.0.0< 10.0.12 |
affected |
| Microsoft | .NET 11.0 | 11.0.0< 11.0 RC1 |
affected |
| Microsoft | .NET 8.0 | 8.0.0< 8.0.31 |
affected |
| Microsoft | .NET 9.0 | 9.0.0< 9.0.20 |
affected |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0< 17.14.40 |
affected |
| Microsoft | Microsoft Visual Studio 2026 version 18.9 | 18.9.0< 18.9.3 |
affected |
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I. Basic Information for CVE-2026-69439
Vulnerability Information
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Vulnerability Title
.NET and Visual Studio Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Heap-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | .NET 10.0 | 10.0.0 ~ 10.0.12 | - |
|
| Microsoft | .NET 11.0 | 11.0.0 ~ 11.0 RC1 | - |
|
| Microsoft | .NET 8.0 | 8.0.0 ~ 8.0.31 | - |
|
| Microsoft | .NET 9.0 | 9.0.0 ~ 9.0.20 | - |
|
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 ~ 17.14.40 | - |
|
| Microsoft | Microsoft Visual Studio 2026 version 18.9 | 18.9.0 ~ 18.9.3 | - |
|
II. Public POCs for CVE-2026-69439
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-69439 (1)
Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total
| CVE-2026-83941 | 9.9 CRITICAL | Entra ID Elevation of Privilege Vulnerability |
| CVE-2026-69586 | 9.8 CRITICAL | Microsoft Windows PDF Remote Code Execution Vulnerability |
| CVE-2026-69463 | 9.8 CRITICAL | Windows NTFS Remote Code Execution Vulnerability |
| CVE-2026-73025 | 9.8 CRITICAL | Windows iSCSI Security Feature Bypass Vulnerability |
| CVE-2026-73010 | 9.8 CRITICAL | Microsoft Failover Cluster Remote Code Execution Vulnerability |
| CVE-2026-69819 | 9.8 CRITICAL | RPC Runtime Library Remote Code Execution Vulnerability |
| CVE-2026-70296 | 9.8 CRITICAL | Windows Imaging Component Remote Code Execution Vulnerability |
| CVE-2026-69715 | 9.8 CRITICAL | Windows Direct Show Remote Code Execution Vulnerability |
| CVE-2026-73009 | 9.8 CRITICAL | Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability |
| CVE-2026-69590 | 9.8 CRITICAL | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability |
| CVE-2026-68839 | 9.8 CRITICAL | Windows USB Mass Storage Class Driver Remote Code Execution Vulnerability |
| CVE-2026-78445 | 9.8 CRITICAL | Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability |
| CVE-2026-69768 | 9.8 CRITICAL | Windows RNDIS Remote Code Execution Vulnerability |
| CVE-2026-69491 | 9.8 CRITICAL | Microsoft DirectMusic Remote Code Execution Vulnerability |
| CVE-2026-69525 | 9.8 CRITICAL | Remote Desktop Services Remote Code Execution Vulnerability |
| CVE-2026-69431 | 9.8 CRITICAL | Telnet Client Remote Code Execution Vulnerability |
| CVE-2026-72979 | 9.8 CRITICAL | Windows DHCP Server Remote Code Execution Vulnerability |
| CVE-2026-69824 | 9.8 CRITICAL | Microsoft Standard XPS Remote Code Execution Vulnerability |
| CVE-2026-69408 | 9.8 CRITICAL | Microsoft Windows Media Foundation Remote Code Execution Vulnerability |
| CVE-2026-69579 | 9.8 CRITICAL | Windows Message Queuing Remote Code Execution Vulnerability |
Showing top 20 of 966 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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V. Comments for CVE-2026-69439
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