.NET Elevation of Privilege Vulnerability
Priority LOW 35CWE-190Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Microsoft. Impact type from Microsoft.
Summary
Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00766 55th percentileScored 2026-11-07
Fix Fixed Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet): 8.0.27, 9.0.16, 10.0.8Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): 8.0.27, 9.0.16, 10.0.8+1 more productMicrosoft: 18 updates
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | .NET 10.0 | 10.0.0 to before 10.0.8 | 10.0.8 | Patch available | CNA |
| Microsoft | .NET 8.0 | 8.0.0 to before 8.0.27 | 8.0.27 | Patch available | CNA |
| Microsoft | .NET 9.0 | 9.0.0 to before 9.0.16 | 9.0.16 | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 to before 4.8.9334.0 and 4.8.4802.0 | 4.8.9334.0 and 4.8.4802.0 | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 to before 4.8.9334.0 and 4.8.4802.0 | 4.8.9334.0 and 4.8.4802.0 | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 to before 4.8.9334.0 and 4.8.4802.0 | 4.8.9334.0 and 4.8.4802.0 | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1 to before 4.8.9334.0 and 4.8.4802.0 | 4.8.9334.0 and 4.8.4802.0 | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 to before 4.8.9334.0 and 4.8.4802.0 | 4.8.9334.0 and 4.8.4802.0 | Patch available | CNA |
| — | Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) | 8.0.0 to before 8.0.27 | 8.0.27 | Patch available | GHSA-8x9c-mqxv-q2pp |
| — | Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) | 8.0.0 to before 8.0.27 | 8.0.27 | Patch available | GHSA-8x9c-mqxv-q2pp |
| — | Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) | 8.0.0 to before 8.0.27 | 8.0.27 | Patch available | GHSA-8x9c-mqxv-q2pp |
| — | Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) | 9.0.0 to before 9.0.16 | 9.0.16 | Patch available | GHSA-8x9c-mqxv-q2pp |
| — | Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) | 9.0.0 to before 9.0.16 | 9.0.16 | Patch available | GHSA-8x9c-mqxv-q2pp |
| — | Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) | 9.0.0 to before 9.0.16 | 9.0.16 | Patch available | GHSA-8x9c-mqxv-q2pp |
| — | Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) | 10.0.0 to before 10.0.8 | 10.0.8 | Patch available | GHSA-8x9c-mqxv-q2pp |
| — | Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) | 10.0.0 to before 10.0.8 | 10.0.8 | Patch available | GHSA-8x9c-mqxv-q2pp |
| — | Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) | 10.0.0 to before 10.0.8 | 10.0.8 | Patch available | GHSA-8x9c-mqxv-q2pp |
- .NET 10.0 VendorMicrosoft Affected 10.0.0 to before 10.0.8 Fixed in 10.0.8 Patch available CNA
- .NET 8.0 VendorMicrosoft Affected 8.0.0 to before 8.0.27 Fixed in 8.0.27 Patch available CNA
- .NET 9.0 VendorMicrosoft Affected 9.0.0 to before 9.0.16 Fixed in 9.0.16 Patch available CNA
- Microsoft .NET Framework 3.5 VendorMicrosoft Affected 3.5.0 to before 4.8.9334.0 and 4.8.4802.0 Fixed in 4.8.9334.0 and 4.8.4802.0 Patch available CNA
- Microsoft .NET Framework 3.5 AND 4.7.2 VendorMicrosoft Affected 4.7.0 to before 4.8.9334.0 and 4.8.4802.0 Fixed in 4.8.9334.0 and 4.8.4802.0 Patch available CNA
- Microsoft .NET Framework 3.5 AND 4.8 VendorMicrosoft Affected 4.8.0 to before 4.8.9334.0 and 4.8.4802.0 Fixed in 4.8.9334.0 and 4.8.4802.0 Patch available CNA
- Microsoft .NET Framework 3.5 AND 4.8.1 VendorMicrosoft Affected 4.8.1 to before 4.8.9334.0 and 4.8.4802.0 Fixed in 4.8.9334.0 and 4.8.4802.0 Patch available CNA
- Microsoft .NET Framework 4.8 VendorMicrosoft Affected 4.8.0 to before 4.8.9334.0 and 4.8.4802.0 Fixed in 4.8.9334.0 and 4.8.4802.0 Patch available CNA
- Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.27 Fixed in 8.0.27 Patch available GHSA-8x9c-mqxv-q2pp
- Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.27 Fixed in 8.0.27 Patch available GHSA-8x9c-mqxv-q2pp
- Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 8.0.0 to before 8.0.27 Fixed in 8.0.27 Patch available GHSA-8x9c-mqxv-q2pp
- Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 9.0.0 to before 9.0.16 Fixed in 9.0.16 Patch available GHSA-8x9c-mqxv-q2pp
- Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.16 Fixed in 9.0.16 Patch available GHSA-8x9c-mqxv-q2pp
- Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.16 Fixed in 9.0.16 Patch available GHSA-8x9c-mqxv-q2pp
- Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.8 Fixed in 10.0.8 Patch available GHSA-8x9c-mqxv-q2pp
- Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.8 Fixed in 10.0.8 Patch available GHSA-8x9c-mqxv-q2pp
- Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 10.0.0 to before 10.0.8 Fixed in 10.0.8 Patch available GHSA-8x9c-mqxv-q2pp
CPE configurations NVD · 26
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:* | 4.8 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* | r2 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:* | 3.5 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* | 8.0.0 to before 8.0.27; 9.0.0 to before 9.0.16; 10.0.0 to before 10.0.8 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:* | 4.8.1 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:* Versions 4.8 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:* Versions 3.5 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.0.27; 9.0.0 to before 9.0.16; 10.0.0 to before 10.0.8 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:* Versions 4.8.1 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·Microsoft
Show 16 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_11_24h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_11_24h2:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_11_25h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_11_25h2:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_11_26h1:-:*:*:*:*:*:arm64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_11_26h1:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2025:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* | 4.7.2 | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_11_24h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_11_24h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_11_25h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_11_25h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_11_26h1:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_11_26h1:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2025:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* Versions 4.7.2 Vulnerable ·Microsoft
Remediation
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 8.0.27 Advisory →
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 8.0.27 Advisory →
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 8.0.27 Advisory →
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 9.0.16 Advisory →
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 9.0.16 Advisory →
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 9.0.16 Advisory →
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 10.0.8 Advisory →
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 10.0.8 Advisory →
- Fix · GHSA-8x9c-mqxv-q2pp Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 10.0.8 Advisory →
Microsoft 18 updates
- Security Update
- .NET 9.0 installed on Linux 9.0.16
- .NET 9.0 installed on Mac OS 9.0.16
- .NET 9.0 installed on Windows 9.0.16
- Security Update
- .NET 8.0 installed on Linux 8.0.27
- .NET 8.0 installed on Mac OS 8.0.27
- .NET 8.0 installed on Windows 8.0.27
- Security Update
- .NET 10.0 installed on Linux 10.0.8
- .NET 10.0 installed on Mac OS 10.0.8
- .NET 10.0 installed on Windows 10.0.8
Show 15 more Microsoft updates
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 4.8 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 4.8 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.8.9334.0 and 4.8.4802.0
- Microsoft .NET Framework 4.8 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.7.2 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8.1 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8.1 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8.1 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8.1 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8.1 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 AND 4.8.1 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 4.8.9334.0 and 4.8.4802.0
- Security Update
- Microsoft .NET Framework 3.5 4.8.9334.0 and 4.8.4802.0
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
Microsoft
Microsoft's page for this CVE →
- Impact
- Elevation of Privilege
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Unlikely
Timeline
- 2026-10-02 Threatist record created from CVE-2026-35433
- 2026-10-03 Alias added: GHSA-8x9c-mqxv-q2pp
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Other 6
- https://github.com/dotnet/wpf/security/advisories/GHSA-8x9c-mqxv-q2pp
- https://github.com/dotnet/announcements/issues/398
- https://access.redhat.com/security/cve/CVE-2026-35433
- https://bugzilla.redhat.com/show_bug.cgi?id=2476577
- https://github.com/dotnet/wpf
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35433.json
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Sources
- CVE-2026-35433 · CVE Program
- CVE-2026-35433 · NVD
- FIRST EPSS
- GHSA-8x9c-mqxv-q2pp · GitHub Advisory Database · CC BY 4.0
- CVE-2026-35433 · Microsoft Security Update Guide
- CVE-2026-35433 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences