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TI-2025-24949 Aliases CVE-2025-36854GHSA-qwjg-j8g7-hwvh

EOL ASP.NET 6.0 Remote Code Execution Vulnerability

Priority LOW 38CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

A vulnerability ( CVE-2024-38229 https://www.cve.org/CVERecord ) exists in EOL ASP.NET when closing an HTTP/3 stream while application code is writing to the response body, a race condition may lead to use-after-free, resulting in Remote Code Execution. Per CWE-416: Use After Free https://cwe.mitre.org/data/definitions/416.html , Use After Free is when a product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.8, 9.0.0-preview.1.24081.5 <= 9.0.0.RC.1 as represented in  CVE-2024-38229 https://www.cve.org/CVERecord . Additionally, if you've deployed self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd  targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed. NOTE: This CVE only represents End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00602 49th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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 6.06.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.Identity>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.win-arm>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.win-arm64>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.win-x64>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.win-x86>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.linux-arm>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.linux-arm64>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.linux-musl-arm>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.linux-musl-arm64>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.linux-musl-x64>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.linux-x64>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.osx-arm64>=6.0.0 – 6.0.36—No fix listedCNA
MicrosoftMicrosoft.AspNetCore.App.Runtime.osx-x64>=6.0.0 – 6.0.36—No fix listedCNA
  • .NET 6.0 VendorMicrosoft Affected 6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.Identity VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.win-arm VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.win-arm64 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.win-x64 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.win-x86 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.linux-arm VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.linux-arm64 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.linux-musl-arm64 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.linux-musl-x64 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.linux-x64 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.osx-arm64 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.App.Runtime.osx-x64 VendorMicrosoft Affected >=6.0.0 – 6.0.36 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-36854
  2. 2026-10-03 Alias added: GHSA-qwjg-j8g7-hwvh

References

Advisory 2

  • 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