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TI-2026-44956 Aliases CVE-2026-62897GHSA-fx4q-gjrx-2jw6

.NET Framework Remote Code Execution Vulnerability

Priority LOW 33CWE-190Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Microsoft. Impact type from Microsoft.

Summary

Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00369 30th percentileScored 2026-11-07
Fix Fixed Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet): 10.0.11, 9.0.19, 8.0.30Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): 10.0.11, 9.0.19, 8.0.30+1 more productMicrosoft: 7 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

VendorProductAffected versionsFixed inStatusSource
Microsoft.NET 10.0 runtime10.0.0 to before 10.0.1110.0.11Patch availableCNA
Microsoft.NET 8.0 runtime8.0.0 to before 8.0.308.0.30Patch availableCNA
Microsoft.NET 9.0 runtime9.0.0 to before 9.0.199.0.19Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.53.5.0 to before 2.0.50727.9183 & 3.0.30729.91692.0.50727.9183 & 3.0.30729.9169Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.24.7.0 to before 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.02.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.84.8.0 to before 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.02.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 4.8.14.8.0.0 to before 4.8.9344.04.8.9344.0Patch availableCNA
MicrosoftMicrosoft Visual Studio 2022 version 17.1417.14.0 to before 17.14.3817.14.38Patch availableCNA
MicrosoftMicrosoft Visual Studio 2026 version 18.818.0 to before 18.8.318.8.3Patch availableCNA
—Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet)10.0.0 to before 10.0.1110.0.11Patch availableGHSA-fx4q-gjrx-2jw6
—Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet)10.0.0 to before 10.0.1110.0.11Patch availableGHSA-fx4q-gjrx-2jw6
—Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet)10.0.0 to before 10.0.1110.0.11Patch availableGHSA-fx4q-gjrx-2jw6
—Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet)9.0.0 to before 9.0.199.0.19Patch availableGHSA-fx4q-gjrx-2jw6
—Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet)9.0.0 to before 9.0.199.0.19Patch availableGHSA-fx4q-gjrx-2jw6
—Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet)9.0.0 to before 9.0.199.0.19Patch availableGHSA-fx4q-gjrx-2jw6
—Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet)8.0.0 to before 8.0.308.0.30Patch availableGHSA-fx4q-gjrx-2jw6
—Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet)8.0.0 to before 8.0.308.0.30Patch availableGHSA-fx4q-gjrx-2jw6
—Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet)8.0.0 to before 8.0.308.0.30Patch availableGHSA-fx4q-gjrx-2jw6
  • .NET 10.0 runtime VendorMicrosoft Affected 10.0.0 to before 10.0.11 Fixed in 10.0.11 Patch available CNA
  • .NET 8.0 runtime VendorMicrosoft Affected 8.0.0 to before 8.0.30 Fixed in 8.0.30 Patch available CNA
  • .NET 9.0 runtime VendorMicrosoft Affected 9.0.0 to before 9.0.19 Fixed in 9.0.19 Patch available CNA
  • Microsoft .NET Framework 3.5 VendorMicrosoft Affected 3.5.0 to before 2.0.50727.9183 & 3.0.30729.9169 Fixed in 2.0.50727.9183 & 3.0.30729.9169 Patch available CNA
  • Microsoft .NET Framework 3.5 AND 4.7.2 VendorMicrosoft Affected 4.7.0 to before 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 Fixed in 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 Patch available CNA
  • Microsoft .NET Framework 3.5 AND 4.8 VendorMicrosoft Affected 4.8.0 to before 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 Fixed in 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 Patch available CNA
  • Microsoft .NET Framework 4.8.1 VendorMicrosoft Affected 4.8.0.0 to before 4.8.9344.0 Fixed in 4.8.9344.0 Patch available CNA
  • Microsoft Visual Studio 2022 version 17.14 VendorMicrosoft Affected 17.14.0 to before 17.14.38 Fixed in 17.14.38 Patch available CNA
  • Microsoft Visual Studio 2026 version 18.8 VendorMicrosoft Affected 18.0 to before 18.8.3 Fixed in 18.8.3 Patch available CNA
  • Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.11 Fixed in 10.0.11 Patch available GHSA-fx4q-gjrx-2jw6
  • Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.11 Fixed in 10.0.11 Patch available GHSA-fx4q-gjrx-2jw6
  • Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 10.0.0 to before 10.0.11 Fixed in 10.0.11 Patch available GHSA-fx4q-gjrx-2jw6
  • Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.19 Fixed in 9.0.19 Patch available GHSA-fx4q-gjrx-2jw6
  • Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.19 Fixed in 9.0.19 Patch available GHSA-fx4q-gjrx-2jw6
  • Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 9.0.0 to before 9.0.19 Fixed in 9.0.19 Patch available GHSA-fx4q-gjrx-2jw6
  • Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.30 Fixed in 8.0.30 Patch available GHSA-fx4q-gjrx-2jw6
  • Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.30 Fixed in 8.0.30 Patch available GHSA-fx4q-gjrx-2jw6
  • Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 8.0.0 to before 8.0.30 Fixed in 8.0.30 Patch available GHSA-fx4q-gjrx-2jw6

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*3.5VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_26h1:-:*:*:*:*:*:arm64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_26h1:-:*:*:*:*:*:x64:*not specified by NVDRunning onMicrosoft
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*4.7.2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*not specified by NVDRunning onMicrosoft
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*17.14.0 to before 17.14.38VulnerableMicrosoft
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*18.8.0 to before 18.8.3VulnerableMicrosoft
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*8.0.0 to before 8.0.30; 9.0.0 to before 9.0.19; 10.0.0 to before 10.0.11VulnerableMicrosoft
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*4.8.1VulnerableMicrosoft
  • cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:* Versions 3.5 Vulnerable ·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:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* Versions 4.7.2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* Versions 17.14.0 to before 17.14.38 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:* Versions 18.8.0 to before 18.8.3 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.0.30; 9.0.0 to before 9.0.19; 10.0.0 to before 10.0.11 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
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*4.8VulnerableMicrosoft
  • cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:* Versions 4.8 Vulnerable ·Microsoft

Remediation

  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 10.0.11 Advisory →
  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 10.0.11 Advisory →
  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 10.0.11 Advisory →
  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 9.0.19 Advisory →
  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 9.0.19 Advisory →
  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 9.0.19 Advisory →
  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 8.0.30 Advisory →
  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 8.0.30 Advisory →
  • Fix · GHSA-fx4q-gjrx-2jw6 Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 8.0.30 Advisory →

Microsoft 7 updates

  • KB5122106
    Security Update
    • .NET 10.0 installed on Linux 10.0.11
    • .NET 10.0 installed on Mac OS 10.0.11
    • .NET 10.0 installed on Windows 10.0.11
  • KB5122105
    Security Update
    • .NET 9.0 installed on Linux 9.0.19
    • .NET 9.0 installed on Mac OS 9.0.19
    • .NET 9.0 installed on Windows 9.0.19
  • KB5122104
    Security Update
    • .NET 8.0 installed on Linux 8.0.30
    • .NET 8.0 installed on Mac OS 8.0.30
    • .NET 8.0 installed on Windows 8.0.30
Show 4 more Microsoft updates
  • KB5120747
    Security Update
    • Microsoft .NET Framework 3.5 2.0.50727.9183 & 3.0.30729.9169
  • KB5120711
    Security Update
    • Microsoft .NET Framework 4.8.1 4.8.9344.0
  • KB5120703
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0
  • KB5120698
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.7.2 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Hardened Images
  • Red Hat OpenShift Dev Spaces

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft Visual Studio 2022 version 17.14Fixed17.14.38 Security Update
Microsoft Visual Studio 2026 version 18.8Fixed18.8.3 Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-62897
  2. 2026-10-03 Alias added: GHSA-fx4q-gjrx-2jw6
  3. 2026-10-28 Fix available: Microsoft/.NET 10.0 [email protected], Microsoft/.NET 8.0 [email protected], Microsoft/.NET 9.0 [email protected] · CNA

References

Patch 1

Advisory 1

Other 3

  • TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2023-19596 .NET and Visual Studio Denial of Service Vulnerability KEVCVSS 3.1HIGH 7.5
  • TI-2023-19588 Microsoft QUIC Denial of Service Vulnerability CVSS 3.1HIGH 7.5
  • TI-2024-14152 .NET and Visual Studio Denial of Service Vulnerability CVSS 3.1HIGH 7.5
  • TI-2021-08380 .NET Core Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
See all 129 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences