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TI-2026-49047 Aliases CVE-2026-69806GHSA-fg32-9f4f-8w3f

.NET Elevation of Privilege Vulnerability

Priority LOW 34CWE-200Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from Microsoft.

Summary

Exposure of sensitive information to an unauthorized actor in .NET allows an authorized attacker to elevate privileges locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00824 57th percentileScored 2026-11-07
Fix Fixed .NET 10.0 runtime (Microsoft): 10.0.12.NET 11.0 runtime (Microsoft): 11.0 RC1+3 more productsRed Hat: 9 advisories

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 9.0 runtime9.0.0 to before 9.0.209.0.20Patch 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
  • .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 9.0 runtime VendorMicrosoft Affected 9.0.0 to before 9.0.20 Fixed in 9.0.20 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

CPE configurations NVD · 10

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*9.0.0 to before 9.0.20; 10.0.0 to before 10.0.12VulnerableMicrosoft
cpe:2.3:a:microsoft:.net:11.0.0:preview1:*:*:*:*:*:*11.0.0 preview1VulnerableMicrosoft
cpe:2.3:a:microsoft:.net:11.0.0:preview2:*:*:*:*:*:*11.0.0 preview2VulnerableMicrosoft
cpe:2.3:a:microsoft:.net:11.0.0:preview3:*:*:*:*:*:*11.0.0 preview3VulnerableMicrosoft
cpe:2.3:a:microsoft:.net:11.0.0:preview4:*:*:*:*:*:*11.0.0 preview4VulnerableMicrosoft
cpe:2.3:a:microsoft:.net:11.0.0:preview5:*:*:*:*:*:*11.0.0 preview5VulnerableMicrosoft
cpe:2.3:a:microsoft:.net:11.0.0:preview7:*:*:*:*:*:*11.0.0 preview7VulnerableMicrosoft
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*not specified by NVDRunning onLinux
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*17.14.0 to before 17.14.40VulnerableMicrosoft
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*18.9.0 to before 18.9.3VulnerableMicrosoft
  • cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* Versions 9.0.0 to before 9.0.20; 10.0.0 to before 10.0.12 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net:11.0.0:preview1:*:*:*:*:*:* Versions 11.0.0 preview1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net:11.0.0:preview2:*:*:*:*:*:* Versions 11.0.0 preview2 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net:11.0.0:preview3:*:*:*:*:*:* Versions 11.0.0 preview3 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net:11.0.0:preview4:*:*:*:*:*:* Versions 11.0.0 preview4 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net:11.0.0:preview5:*:*:*:*:*:* Versions 11.0.0 preview5 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:.net:11.0.0:preview7:*:*:*:*:*:* Versions 11.0.0 preview7 Vulnerable ·Microsoft
  • cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
  • cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* Versions 17.14.0 to before 17.14.40 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:* Versions 18.9.0 to before 18.9.3 Vulnerable ·Microsoft

Remediation

  • Fix · CNA .NET 10.0 runtime (Microsoft) Fixed in 10.0.12
  • Fix · CNA .NET 11.0 runtime (Microsoft) Fixed in 11.0 RC1
  • Fix · CNA .NET 9.0 runtime (Microsoft) Fixed in 9.0.20
  • Fix · CNA Microsoft Visual Studio 2022 version 17.14 (Microsoft) Fixed in 17.14.40
  • Fix · CNA Microsoft Visual Studio 2026 version 18.9 (Microsoft) Fixed in 18.9.3

Red Hat 9 advisories

  • RHSA-2026:89735 Released 2026-10-27 · Red Hat rating Critical
    .NET 9.0 security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) dotnet-sdk-9.0-source-built-artifacts-9.0.122-1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) aspnetcore-runtime-9.0-9.0.21-1.el9_6, aspnetcore-runtime-dbg-9.0-9.0.21-1.el9_6, aspnetcore-targeting-pack-9.0-9.0.21-1.el9_6 +12
  • RHSA-2026:88424 Released 2026-10-22 · Red Hat rating Critical
    .NET 9.0 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) aspnetcore-runtime-9.0-9.0.21-1.el10_0, aspnetcore-runtime-dbg-9.0-9.0.21-1.el10_0, aspnetcore-targeting-pack-9.0-9.0.21-1.el10_0 +12
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) dotnet-sdk-9.0-source-built-artifacts-9.0.122-1.el10_0
  • RHSA-2026:68676 Released 2026-09-17 · Red Hat rating Important
    .NET 10.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-10.0-10.0.12-1.el8_10, aspnetcore-runtime-dbg-10.0-10.0.12-1.el8_10, aspnetcore-targeting-pack-10.0-10.0.12-1.el8_10 +12
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-10.0-source-built-artifacts-10.0.112-1.el8_10
Show 6 more Red Hat advisories
  • RHSA-2026:68233 Released 2026-09-16 · Red Hat rating Important
    .NET 9.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) aspnetcore-runtime-9.0-9.0.20-1.el8_10, aspnetcore-runtime-dbg-9.0-9.0.20-1.el8_10, aspnetcore-targeting-pack-9.0-9.0.20-1.el8_10 +11
    • Red Hat Enterprise Linux CRB (v. 8) dotnet-sdk-9.0-source-built-artifacts-9.0.121-1.el8_10
  • RHSA-2026:67613 Released 2026-09-15 · Red Hat rating Important
    .NET 10.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-10.0-10.0.12-1.el9_8, aspnetcore-runtime-dbg-10.0-10.0.12-1.el9_8, aspnetcore-targeting-pack-10.0-10.0.12-1.el9_8 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-10.0-source-built-artifacts-10.0.112-1.el9_8
  • RHSA-2026:67614 Released 2026-09-15 · Red Hat rating Important
    .NET 9.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) aspnetcore-runtime-9.0-9.0.20-1.el9_8, aspnetcore-runtime-dbg-9.0-9.0.20-1.el9_8, aspnetcore-targeting-pack-9.0-9.0.20-1.el9_8 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) dotnet-sdk-9.0-source-built-artifacts-9.0.121-1.el9_8
  • RHSA-2026:67530 Released 2026-09-15 · Red Hat rating Important
    .NET 10.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-10.0-10.0.12-1.el10_2, aspnetcore-runtime-dbg-10.0-10.0.12-1.el10_2, aspnetcore-targeting-pack-10.0-10.0.12-1.el10_2 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-10.0-source-built-artifacts-10.0.112-1.el10_2
  • RHSA-2026:67528 Released 2026-09-15 · Red Hat rating Important
    .NET 9.0 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) aspnetcore-runtime-9.0-9.0.20-1.el10_2, aspnetcore-runtime-dbg-9.0-9.0.20-1.el10_2, aspnetcore-targeting-pack-9.0-9.0.20-1.el10_2 +11
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-9.0-source-built-artifacts-9.0.121-1.el10_2
  • RHSA-2026:66863 Released 2026-09-12 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images dotnet-sdk-10.0-10.0.112-1.hum1@aarch64, dotnet-sdk-10.0-10.0.112-1.hum1@x86_64, dotnet-sdk-10.0-source-built-artifacts-10.0.112-1.hum1@aarch64 +8

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-2026:89735
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:67528, RHSA-2026:67530
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:68233, RHSA-2026:68676
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:67613, RHSA-2026:67614
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:88424
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:89735
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:68233, RHSA-2026:68676
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:67528, RHSA-2026:67530
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:67613, RHSA-2026:67614
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:88424
Red Hat Hardened ImagesFixed RHSA-2026:66863
Not affected: 1 product
  • Red Hat Hardened Images

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
.NET 10.0 installed on LinuxFixed 10.0.12 · Security Update
.NET 11.0 installed on LinuxFixed11.0 RC1 Security Update
.NET 9.0 installed on LinuxFixed 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-2026-69806
  2. 2026-10-03 Alias added: GHSA-fg32-9f4f-8w3f
  3. 2026-10-23 Fix available: RHSA-2026:88424 · Red Hat
  4. 2026-10-23 Fix available: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · Red Hat
  5. 2026-10-29 Fix available: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6) · Red Hat
  6. 2026-10-29 Fix available: RHSA-2026:89735 · Red Hat
  7. 2026-10-30 Fix available: Microsoft/.NET 10.0 [email protected], Microsoft/.NET 11.0 [email protected] RC1, 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