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TI-2026-48838 Aliases CVE-2026-69522GHSA-2j8r-3c22-8565

.NET and Visual Studio Remote Code Execution Vulnerability

Priority MEDIUM 42CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
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

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00837 57th percentileScored 2026-11-07
Fix Fixed Microsoft.DiaSymReader.Native (NuGet): 18.9.0-beta1.26405.2Microsoft: 15 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 10.0.1210.0.12Patch availableCNA
Microsoft.NET 11.0 runtime11.0.0 to before 11.0 RC111.0 RC1Patch availableCNA
Microsoft.NET 8.0 runtime8.0.0 to before 8.0.318.0.31Patch availableCNA
Microsoft.NET 9.0 runtime9.0.0 to before 9.0.209.0.20Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.23.0.0.0 to before 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.02.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.24.7.0 to before 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.02.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.84.8.0 to before 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.02.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8.14.8.1 to before 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.02.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.24.7.0 to before 4.7.4145.04.7.4145.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 4.84.8.0 to before 4.8.4806.04.8.4806.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 4.8.14.8.0.0 to before 4.8.9347.04.8.9347.0Patch availableCNA
MicrosoftMicrosoft Visual Studio 2022 version 17.1417.14.0 to before 17.14.4017.14.40Patch availableCNA
MicrosoftMicrosoft Visual Studio 2026 version 18.918.9.0 to before 18.9.318.9.3Patch availableCNA
—Microsoft.DiaSymReader.Native (NuGet)17.10.0-beta1.24272.1 to before 18.9.0-beta1.26405.218.9.0-beta1.26405.2Patch availableGHSA-2j8r-3c22-8565
  • .NET 10.0 runtime VendorMicrosoft Affected 10.0.0 to before 10.0.12 Fixed in 10.0.12 Patch available CNA
  • .NET 11.0 runtime VendorMicrosoft Affected 11.0.0 to before 11.0 RC1 Fixed in 11.0 RC1 Patch available CNA
  • .NET 8.0 runtime VendorMicrosoft Affected 8.0.0 to before 8.0.31 Fixed in 8.0.31 Patch available CNA
  • .NET 9.0 runtime VendorMicrosoft Affected 9.0.0 to before 9.0.20 Fixed in 9.0.20 Patch available CNA
  • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 VendorMicrosoft Affected 3.0.0.0 to before 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0 Fixed in 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0 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 & 4.7.4145.0 Fixed in 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0 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 & 4.8.4806.0 Fixed in 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0 Patch available CNA
  • Microsoft .NET Framework 3.5 AND 4.8.1 VendorMicrosoft Affected 4.8.1 to before 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0 Fixed in 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0 Patch available CNA
  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 VendorMicrosoft Affected 4.7.0 to before 4.7.4145.0 Fixed in 4.7.4145.0 Patch available CNA
  • Microsoft .NET Framework 4.8 VendorMicrosoft Affected 4.8.0 to before 4.8.4806.0 Fixed in 4.8.4806.0 Patch available CNA
  • Microsoft .NET Framework 4.8.1 VendorMicrosoft Affected 4.8.0.0 to before 4.8.9347.0 Fixed in 4.8.9347.0 Patch available CNA
  • Microsoft Visual Studio 2022 version 17.14 VendorMicrosoft Affected 17.14.0 to before 17.14.40 Fixed in 17.14.40 Patch available CNA
  • Microsoft Visual Studio 2026 version 18.9 VendorMicrosoft Affected 18.9.0 to before 18.9.3 Fixed in 18.9.3 Patch available CNA
  • Microsoft.DiaSymReader.Native (NuGet) Vendor— Affected 17.10.0-beta1.24272.1 to before 18.9.0-beta1.26405.2 Fixed in 18.9.0-beta1.26405.2 Patch available GHSA-2j8r-3c22-8565

Remediation

  • Fix · GHSA-2j8r-3c22-8565 Microsoft.DiaSymReader.Native (NuGet) Fixed in 18.9.0-beta1.26405.2 Advisory →

Microsoft 15 updates

  • KB5126424
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0
  • KB5126422
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0
  • KB5126421
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9346.0
Show 12 more Microsoft updates
  • KB5126053
    Security Update
    • Microsoft .NET Framework 4.8.1 4.8.9347.0
  • KB5126052
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0
  • KB5126051
    Security Update
    • Microsoft .NET Framework 4.8 4.8.4806.0
  • KB5126050
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4806.0
  • KB5126049
    Security Update
    • Microsoft .NET Framework 4.8 4.8.4806.0
  • KB5126048
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0
  • KB5126047
    Security Update
    • Microsoft .NET Framework 4.8 4.8.4806.0
  • KB5126046
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4806.0
  • KB5126045
    Security Update
    • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.4145.0
  • KB5126044
    Security Update
    • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.4145.0
  • KB5126043
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0
    • Microsoft .NET Framework 3.5 AND 4.7.2 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0
  • KB5123099
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9512
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.9512
    • Windows Server 2016 10.0.14393.9512
    • Windows Server 2016 (Server Core installation) 10.0.14393.9512

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Unlikely
ProductStatusPlan or fix
.NET 10.0 installed on WindowsFixed 10.0.12 · Security Update
.NET 11.0 installed on WindowsFixed11.0 RC1 Security Update
.NET 8.0 installed on WindowsFixed 8.0.31 · Security Update
.NET 9.0 installed on WindowsFixed 9.0.20 · Security Update
Microsoft Visual Studio 2022 version 17.14Fixed 17.14.40 · Security Update
Microsoft Visual Studio 2026 version 18.9Fixed 18.9.3 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-69522
  2. 2026-10-03 Alias added: GHSA-2j8r-3c22-8565
  3. 2026-10-30 Fix available: Microsoft/.NET 10.0 [email protected], Microsoft/.NET 11.0 [email protected] RC1, Microsoft/.NET 8.0 [email protected] +1 · CNA
  4. 2026-11-04 1 new reference · GHSA-2j8r-3c22-8565

References

Patch 1

Advisory 1

Other 3

  • 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