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TI-2026-37338 Aliases CVE-2026-50649

.NET Remote Code Execution Vulnerability

Priority MEDIUM 43CWE-502Published · Updated

Key facts

Attack vector
Local
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, Red Hat and Microsoft. Impact type from Microsoft.

Summary

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.04017 90th percentileScored 2026-11-07
Fix Fixed Red Hat: 16 advisoriesMicrosoft: 19 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 8.0 runtime8.0.0 to before 8.0.298.0.29Patch availableCNA
Microsoft.NET 9.0 runtime9.0.0 to before 9.0.189.0.18Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.53.5.0 to before 2.0.50727.9182 & 3.0.30729.91682.0.50727.9182 & 3.0.30729.9168Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.7.24.7.0 to before 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.02.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.84.8.0 to before 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.02.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 3.5 AND 4.8.14.8.1 to before 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.02.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.24.7.0 to before 4.7.4143.04.7.4143.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 4.84.8.0 to before 4.8.4803.04.8.4803.0Patch availableCNA
MicrosoftMicrosoft .NET Framework 4.8.14.8.0.0 to before 4.8.9340.04.8.9340.0Patch availableCNA
MicrosoftMicrosoft Visual Studio 2026 version 18.718.0 to before 18.7.418.7.4Patch availableCNA
  • .NET 8.0 runtime VendorMicrosoft Affected 8.0.0 to before 8.0.29 Fixed in 8.0.29 Patch available CNA
  • .NET 9.0 runtime VendorMicrosoft Affected 9.0.0 to before 9.0.18 Fixed in 9.0.18 Patch available CNA
  • Microsoft .NET Framework 3.5 VendorMicrosoft Affected 3.5.0 to before 2.0.50727.9182 & 3.0.30729.9168 Fixed in 2.0.50727.9182 & 3.0.30729.9168 Patch available CNA
  • Microsoft .NET Framework 3.5 AND 4.7.2 VendorMicrosoft Affected 4.7.0 to before 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 Fixed in 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 Patch available CNA
  • Microsoft .NET Framework 3.5 AND 4.8 VendorMicrosoft Affected 4.8.0 to before 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 Fixed in 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 Patch available CNA
  • Microsoft .NET Framework 3.5 AND 4.8.1 VendorMicrosoft Affected 4.8.1 to before 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 Fixed in 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 Patch available CNA
  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 VendorMicrosoft Affected 4.7.0 to before 4.7.4143.0 Fixed in 4.7.4143.0 Patch available CNA
  • Microsoft .NET Framework 4.8 VendorMicrosoft Affected 4.8.0 to before 4.8.4803.0 Fixed in 4.8.4803.0 Patch available CNA
  • Microsoft .NET Framework 4.8.1 VendorMicrosoft Affected 4.8.0.0 to before 4.8.9340.0 Fixed in 4.8.9340.0 Patch available CNA
  • Microsoft Visual Studio 2026 version 18.7 VendorMicrosoft Affected 18.0 to before 18.7.4 Fixed in 18.7.4 Patch available CNA

CPE configurations NVD · 35

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:*4.8.1VulnerableMicrosoft
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:4.8:*:*:*:*:*:*:*4.8VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*r2Running onMicrosoft
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*4.6.2VulnerableMicrosoft
  • cpe:2.3:a:microsoft:.net_framework:4.8.1:*:*:*:*:*:*:* Versions 4.8.1 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:4.8:*:*:*:*:*:*:* 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_10_1607:-:*:*:*:*:*:x86:* 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:4.6.2:*:*:*:*:*:*:* Versions 4.6.2 Vulnerable ·Microsoft
Show 25 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*4.7VulnerableMicrosoft
cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*4.7.1VulnerableMicrosoft
cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*4.7.2VulnerableMicrosoft
cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:*3.5VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x86:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:arm64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:x64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:-:*:*:*:*:*:arm64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:-:*:*:*:*:*:x64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_25h2:-:*:*:*:*:*:arm64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_25h2:-:*:*:*:*:*:x64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*8.0.0 to before 8.0.29; 9.0.0 to before 9.0.18VulnerableMicrosoft
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*all versionsRunning onMicrosoft
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*all versionsRunning onMicrosoft
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*18.7.0 to before 18.7.4VulnerableMicrosoft
  • cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:* Versions 4.7 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:* Versions 4.7.1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* Versions 4.7.2 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net_framework:3.5:-:*:*:*:*:*:* Versions 3.5 Vulnerable ·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_21h2:-:*:*:*:*:*:x86:* 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:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:-:*:*:*:*:*:arm64:* Versions not specified by NVD Running on ·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_server_2022:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.0.29; 9.0.0 to before 9.0.18 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* 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_1809:-:*:*:*:*:*:x86:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* Versions all versions Running on ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:* Versions 18.7.0 to before 18.7.4 Vulnerable ·Microsoft

Remediation

Red Hat 16 advisories

  • RHSA-2026:58570 Released 2026-08-24 · Red Hat rating Important
    .NET 9.0 security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-9.0-source-built-artifacts-9.0.120-1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) aspnetcore-runtime-9.0-9.0.19-1.el9_6, aspnetcore-runtime-dbg-9.0-9.0.19-1.el9_6, aspnetcore-targeting-pack-9.0-9.0.19-1.el9_6 +12
  • RHSA-2026:58569 Released 2026-08-24 · Red Hat rating Important
    .NET 8.0 security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-8.0-source-built-artifacts-8.0.130-1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) aspnetcore-runtime-8.0-8.0.30-1.el9_6, aspnetcore-runtime-dbg-8.0-8.0.30-1.el9_6, aspnetcore-targeting-pack-8.0-8.0.30-1.el9_6 +9
  • RHSA-2026:58568 Released 2026-08-24 · Red Hat rating Important
    .NET 8.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) aspnetcore-runtime-8.0-8.0.30-1.el9_4, aspnetcore-runtime-dbg-8.0-8.0.30-1.el9_4, aspnetcore-targeting-pack-8.0-8.0.30-1.el9_4 +11
Show 13 more Red Hat advisories
  • RHSA-2026:58567 Released 2026-08-24 · Red Hat rating Important
    .NET 9.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) aspnetcore-runtime-9.0-9.0.19-1.el10_0, aspnetcore-runtime-dbg-9.0-9.0.19-1.el10_0, aspnetcore-targeting-pack-9.0-9.0.19-1.el10_0 +12
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-9.0-source-built-artifacts-9.0.120-1.el10_0
  • RHSA-2026:58566 Released 2026-08-24 · Red Hat rating Important
    .NET 8.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) aspnetcore-runtime-8.0-8.0.30-1.el10_0, aspnetcore-runtime-dbg-8.0-8.0.30-1.el10_0, aspnetcore-targeting-pack-8.0-8.0.30-1.el10_0 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-8.0-source-built-artifacts-8.0.130-1.el10_0
  • RHSA-2026:42145 Released 2026-07-20 · Red Hat rating Important
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images aspnetcore-runtime-8.0-8.0.29-2.1.hum1@aarch64, aspnetcore-runtime-8.0-8.0.29-2.1.hum1@x86_64, aspnetcore-runtime-dbg-8.0-8.0.29-2.1.hum1@aarch64 +22
  • RHSA-2026:41898 Released 2026-07-20 · Red Hat rating Important
    .NET 10.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-10.0-10.0.10-1.el9_8, aspnetcore-runtime-dbg-10.0-10.0.10-1.el9_8, aspnetcore-targeting-pack-10.0-10.0.10-1.el9_8 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-10.0-source-built-artifacts-10.0.110-1.el9_8
  • RHSA-2026:41896 Released 2026-07-20 · Red Hat rating Important
    .NET 9.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-9.0-9.0.18-1.el9_8, aspnetcore-runtime-dbg-9.0-9.0.18-1.el9_8, aspnetcore-targeting-pack-9.0-9.0.18-1.el9_8 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-9.0-source-built-artifacts-9.0.119-1.el9_8
  • RHSA-2026:41894 Released 2026-07-20 · Red Hat rating Important
    .NET 8.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-8.0-8.0.29-1.el9_8, aspnetcore-runtime-dbg-8.0-8.0.29-1.el9_8, aspnetcore-targeting-pack-8.0-8.0.29-1.el9_8 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-8.0-source-built-artifacts-8.0.129-1.el9_8
  • RHSA-2026:41901 Released 2026-07-20 · Red Hat rating Important
    .NET 8.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-8.0-8.0.29-1.el8_10, aspnetcore-runtime-dbg-8.0-8.0.29-1.el8_10, aspnetcore-targeting-pack-8.0-8.0.29-1.el8_10 +9
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-8.0-source-built-artifacts-8.0.129-1.el8_10
  • RHSA-2026:41897 Released 2026-07-20 · Red Hat rating Important
    .NET 10.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-10.0-10.0.10-1.el10_2, aspnetcore-runtime-dbg-10.0-10.0.10-1.el10_2, aspnetcore-targeting-pack-10.0-10.0.10-1.el10_2 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-10.0-source-built-artifacts-10.0.110-1.el10_2
  • RHSA-2026:41900 Released 2026-07-20 · Red Hat rating Important
    .NET 10.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-10.0-10.0.10-1.el8_10, aspnetcore-runtime-dbg-10.0-10.0.10-1.el8_10, aspnetcore-targeting-pack-10.0-10.0.10-1.el8_10 +12
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-10.0-source-built-artifacts-10.0.110-1.el8_10
  • RHSA-2026:41895 Released 2026-07-20 · Red Hat rating Important
    .NET 9.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-9.0-9.0.18-1.el10_2, aspnetcore-runtime-dbg-9.0-9.0.18-1.el10_2, aspnetcore-targeting-pack-9.0-9.0.18-1.el10_2 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-9.0-source-built-artifacts-9.0.119-1.el10_2
  • RHSA-2026:41893 Released 2026-07-20 · Red Hat rating Important
    .NET 8.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-8.0-8.0.29-1.el10_2, aspnetcore-runtime-dbg-8.0-8.0.29-1.el10_2, aspnetcore-targeting-pack-8.0-8.0.29-1.el10_2 +9
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-8.0-source-built-artifacts-8.0.129-1.el10_2
  • RHSA-2026:41899 Released 2026-07-20 · Red Hat rating Important
    .NET 9.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-9.0-9.0.18-1.el8_10, aspnetcore-runtime-dbg-9.0-9.0.18-1.el8_10, aspnetcore-targeting-pack-9.0-9.0.18-1.el8_10 +11
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-9.0-source-built-artifacts-9.0.119-1.el8_10
  • RHSA-2026:27171 Released 2026-06-19 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images dotnet-sdk-9.0-9.0.118-1.hum1@aarch64, dotnet-sdk-9.0-9.0.118-1.hum1@x86_64, dotnet-sdk-9.0-source-built-artifacts-9.0.118-1.hum1@aarch64 +10

Microsoft 19 updates

  • KB5101014
    Security Update
    • Microsoft .NET Framework 3.5 2.0.50727.9182 & 3.0.30729.9168
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9182 & 3.0.30729.9168
  • KB5101011
    Security Update
    • Microsoft .NET Framework 4.8 4.8.4803.0
  • KB5101010
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0
Show 16 more Microsoft updates
  • KB5101009
    Security Update
    • Microsoft .NET Framework 4.8 4.8.4803.0
  • KB5101008
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0
  • KB5101007
    Security Update
    • Microsoft .NET Framework 4.8 4.8.4803.0
  • KB5101006
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8 2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0
  • KB5101005
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
  • KB5101004
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
  • KB5101002
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 4.8.9340.0
    • Microsoft .NET Framework 4.8.1 4.8.9340.0
  • KB5101001
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
  • KB5101000
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0
  • KB5100998
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.8.1 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0
  • KB5100991
    Security Update
    • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.4143.0
  • KB5100990
    Security Update
    • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7.4143.0
  • KB5100989
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.7.2 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0
  • KB5100985
    Security Update
    • Microsoft .NET Framework 3.5 2.0.50727.8983 & 3.0.30729.8978
  • KB5100984
    Security Update
    • Microsoft .NET Framework 3.5 2.0.50727.8983 & 3.0.30729.8978
  • KB5099535
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.7.2 2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9339
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.9339
    • Windows Server 2016 10.0.14393.9339
    • Windows Server 2016 (Server Core installation) 10.0.14393.9339

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:58569, RHSA-2026:58570
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:41893, RHSA-2026:41895, RHSA-2026:41897
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:41899, RHSA-2026:41900, RHSA-2026:41901
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:41894, RHSA-2026:41896, RHSA-2026:41898
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:58568
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:58566, RHSA-2026:58567
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:58569, RHSA-2026:58570
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:41899, RHSA-2026:41900, RHSA-2026:41901
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:41893, RHSA-2026:41895, RHSA-2026:41897
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:41894, RHSA-2026:41896, RHSA-2026:41898
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:58566, RHSA-2026:58567
Red Hat Hardened ImagesFixed RHSA-2026:27171, RHSA-2026:42145
Not affected: 2 products
  • 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
.NET 8.0 installed on WindowsFixed 8.0.29 · Security Update
.NET 9.0 installed on WindowsFixed 9.0.18 · Security Update
Microsoft Visual Studio 2026 version 18.7Fixed 18.7.4 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-50649
  2. 2026-10-28 Fix available: Microsoft/.NET 8.0 [email protected], Microsoft/.NET 9.0 [email protected] · CNA

References

Patch 1

  • 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