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TI-2026-72245 Aliases CVE-2026-70165

Link following in .NET allows local privilege escalation

Priority LOW 32CWE-59Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Microsoft .NET 9.0, 10.0 and 11.0 runtimes and Visual Studio 2022 version 17.14 and Visual Studio 2026 version 18.10 are affected before their fixed releases. Improper link resolution before file access (CWE-59) lets an attacker abuse how software follows links. An authorized local attacker with low privileges can gain higher privileges, though the attack is complex and needs user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00375 31st percentileScored 2026-11-07
Fix Fixed .NET 10.0 runtime (Microsoft): 10.0.402.NET 11.0 runtime (Microsoft): 11.0.100-rc.2+3 more products

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 10.0.40210.0.402Patch availableCNA
Microsoft.NET 11.0 runtime11.0.0 to before 11.0.100-rc.211.0.100-rc.2Patch availableCNA
Microsoft.NET 9.0 runtime9.0.0 to before 9.0.319, 9.0.1229.0.319, 9.0.122Patch 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
  • .NET 10.0 runtime VendorMicrosoft Affected 10.0.0 to before 10.0.402 Fixed in 10.0.402 Patch available CNA
  • .NET 11.0 runtime VendorMicrosoft Affected 11.0.0 to before 11.0.100-rc.2 Fixed in 11.0.100-rc.2 Patch available CNA
  • .NET 9.0 runtime VendorMicrosoft Affected 9.0.0 to before 9.0.319, 9.0.122 Fixed in 9.0.319, 9.0.122 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

Remediation

Update .NET 9.0 to 9.0.319 or 9.0.122, .NET 10.0 to 10.0.402, .NET 11.0 to 11.0.100-rc.2, Visual Studio 2022 version 17.14 to 17.14.42 and Visual Studio 2026 version 18.10 to 18.10.4.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

  • Fix · CNA .NET 10.0 runtime (Microsoft) Fixed in 10.0.402
  • Fix · CNA .NET 11.0 runtime (Microsoft) Fixed in 11.0.100-rc.2
  • Fix · CNA .NET 9.0 runtime (Microsoft) Fixed in 9.0.319, 9.0.122
  • 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

Vendor assessments

Red Hat

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

Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-70165
  2. 2026-10-13 CISA SSVC decision points changed
  3. 2026-10-14 Priority changed: MEDIUM → LOW
  4. 2026-10-14 CISA SSVC decision points changed
  5. 2026-10-20 Affected versions changed · Red Hat
  6. 2026-10-20 CVSS score added · Red Hat
  7. 2026-10-23 Fix available: Microsoft/.NET 10.0 [email protected], Microsoft/.NET 11.0 [email protected], Microsoft/.NET 9.0 [email protected], 9.0.122 · CNA

References

Patch 1

  • 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