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TI-2026-73021 Aliases CVE-2026-96232GHSA-f8qh-mqg4-9939

Out-of-bounds read in .NET lets remote attackers disclose information

Priority MEDIUM 41CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-125 and the CVSS impact.

Summary

Microsoft .NET runtimes 8.0 from 8.0.0 before 8.0.32, 9.0 from 9.0.0 before 9.0.21, 10.0 from 10.0.0 before 10.0.13 and 11.0 from 11.0.0 before 11.0.0-rc.2 are affected, as are Visual Studio 2022 version 17.14 before 17.14.42 and Visual Studio 2026 version 18.10 before 18.10.4. An out-of-bounds read (CWE-125) lets code read memory past the end of a buffer and disclose information. An unauthenticated remote attacker can trigger this over a network without user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Out-of-bounds read in .NET allows an unauthorized attacker to disclose information over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00895 59th percentileScored 2026-11-07
Fix Fixed .NET 10.0 runtime (Microsoft): 10.0.13.NET 11.0 runtime (Microsoft): 11.0.0-rc.2+7 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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 10.0.1310.0.13Patch availableCNA
Microsoft.NET 11.0 runtime11.0.0 to before 11.0.0-rc.211.0.0-rc.2Patch availableCNA
Microsoft.NET 8.0 runtime8.0.0 to before 8.0.328.0.32Patch availableCNA
Microsoft.NET 9.0 runtime9.0.0 to before 9.0.219.0.21Patch availableCNA
MicrosoftMicrosoft Visual Studio 2022 version 17.1417.14.0 to before 17.14.4217.14.42Patch availableCNA
MicrosoftMicrosoft Visual Studio 2026 version 18.1018.10.0 to before 18.10.418.10.4Patch availableCNA
—Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet)11.0.0-preview.1 to before 11.0.0-rc.211.0.0-rc.2Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet)11.0.0-preview.1 to before 11.0.0-rc.211.0.0-rc.2Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet)11.0.0-preview.1 to before 11.0.0-rc.211.0.0-rc.2Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet)9.0.0 to before 9.0.219.0.21Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet)9.0.0 to before 9.0.219.0.21Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet)9.0.0 to before 9.0.219.0.21Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet)8.0.0 to before 8.0.328.0.32Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet)8.0.0 to before 8.0.328.0.32Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet)8.0.0 to before 8.0.328.0.32Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet)10.0.0 to before 10.0.1310.0.13Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet)10.0.0 to before 10.0.1310.0.13Patch availableGHSA-f8qh-mqg4-9939
—Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet)10.0.0 to before 10.0.1310.0.13Patch availableGHSA-f8qh-mqg4-9939
  • .NET 10.0 runtime VendorMicrosoft Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available CNA
  • .NET 11.0 runtime VendorMicrosoft Affected 11.0.0 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available CNA
  • .NET 8.0 runtime VendorMicrosoft Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available CNA
  • .NET 9.0 runtime VendorMicrosoft Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available CNA
  • Microsoft Visual Studio 2022 version 17.14 VendorMicrosoft Affected 17.14.0 to before 17.14.42 Fixed in 17.14.42 Patch available CNA
  • Microsoft Visual Studio 2026 version 18.10 VendorMicrosoft Affected 18.10.0 to before 18.10.4 Fixed in 18.10.4 Patch available CNA
  • Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 11.0.0-preview.1 to before 11.0.0-rc.2 Fixed in 11.0.0-rc.2 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 9.0.0 to before 9.0.21 Fixed in 9.0.21 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 8.0.0 to before 8.0.32 Fixed in 8.0.32 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-f8qh-mqg4-9939
  • Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Vendor— Affected 10.0.0 to before 10.0.13 Fixed in 10.0.13 Patch available GHSA-f8qh-mqg4-9939

Remediation

Update .NET 8.0 to 8.0.32, .NET 9.0 to 9.0.21, .NET 10.0 to 10.0.13 and .NET 11.0 to 11.0.0-rc.2, and update Visual Studio 2022 17.14 to 17.14.42 and Visual Studio 2026 18.10 to 18.10.4. The matching Windows runtime NuGet packages are fixed in the same versions.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA .NET 10.0 runtime (Microsoft) Fixed in 10.0.13
  • Fix · CNA .NET 11.0 runtime (Microsoft) Fixed in 11.0.0-rc.2
  • Fix · CNA .NET 8.0 runtime (Microsoft) Fixed in 8.0.32
  • Fix · CNA .NET 9.0 runtime (Microsoft) Fixed in 9.0.21
  • Fix · CNA Microsoft Visual Studio 2022 version 17.14 (Microsoft) Fixed in 17.14.42
  • Fix · CNA Microsoft Visual Studio 2026 version 18.10 (Microsoft) Fixed in 18.10.4
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 11.0.0-rc.2 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 9.0.21 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 9.0.21 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 9.0.21 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 8.0.32 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 8.0.32 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 8.0.32 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) Fixed in 10.0.13 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) Fixed in 10.0.13 Advisory →
  • Fix · GHSA-f8qh-mqg4-9939 Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) Fixed in 10.0.13 Advisory →

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

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-96232
  2. 2026-10-13 Alias added: GHSA-f8qh-mqg4-9939
  3. 2026-10-13 Fix available: NuGet/[email protected], NuGet/[email protected], NuGet/[email protected] +9 · GHSA-f8qh-mqg4-9939
  4. 2026-10-13 CVSS score added · GHSA-f8qh-mqg4-9939
  5. 2026-10-13 Weakness changed · GHSA-f8qh-mqg4-9939
  6. 2026-10-13 4 new references · GHSA-f8qh-mqg4-9939
  7. 2026-10-14 Priority changed: LOW → MEDIUM
  8. 2026-10-23 Fix available: Microsoft/.NET 10.0 [email protected], Microsoft/.NET 11.0 [email protected], Microsoft/.NET 8.0 [email protected] +1 · CNA
  9. 2026-10-23 Affected versions changed · Red Hat
  10. 2026-10-24 Affected versions changed · Red Hat
  11. 2026-10-24 CVSS score added · Red Hat
  12. 2026-10-29 Affected versions changed · Red Hat

References

Patch 1

Other 4

  • TI-2026-42212 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-37256 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-16982 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-36863 Windows Server Update Service (WSUS) Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-33671 Microsoft SharePoint Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
See all 18045 →

Sources

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