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TI-2020-01035 Aliases CVE-2020-1066GHSA-jp98-j3r8-w99v

.NET Framework Elevation of Privilege Vulnerability

Priority LOW 39Published · Updated

Key facts

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

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

Summary

An elevation of privilege vulnerability exists in .NET Framework which could allow an attacker to elevate their privilege level. To exploit the vulnerability, an attacker would first have to access the local machine, and then run a malicious program. The update addresses the vulnerability by correcting how .NET Framework activates COM objects.

Why it matters now

EPSS 0.02522 84th percentileScored 2026-11-07
Fix Fixed Microsoft .NET Framework 3.0 Service Pack 2 (Microsoft): publicationMicrosoft .NET Framework 3.5.1 (Microsoft): publication

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft .NET Framework 3.0 Service Pack 23.0.0 to before publicationpublicationPatch availableCNA
MicrosoftMicrosoft .NET Framework 3.5.13.5.0 to before publicationpublicationPatch availableCNA
  • Microsoft .NET Framework 3.0 Service Pack 2 VendorMicrosoft Affected 3.0.0 to before publication Fixed in publication Patch available CNA
  • Microsoft .NET Framework 3.5.1 VendorMicrosoft Affected 3.5.0 to before publication Fixed in publication Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*3.0 sp2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*3.5.1VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*r2 sp1Running onMicrosoft
  • cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:* Versions 3.0 sp2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:* Versions 3.5.1 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* Versions r2 sp1 Running on ·Microsoft

Remediation

  • Fix · CNA Microsoft .NET Framework 3.0 Service Pack 2 (Microsoft) Fixed in publication
  • Fix · CNA Microsoft .NET Framework 3.5.1 (Microsoft) Fixed in publication

Vendor assessments

Red Hat

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

Not affected: 3 products
  • .NET Core 2.1 on Red Hat Enterprise Linux
  • .NET Core 3.1 on Red Hat Enterprise Linux
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1066
  2. 2026-10-03 Alias added: GHSA-jp98-j3r8-w99v

References

Patch 2

  • TI-2020-00622 XML injection in Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01112 A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and… KEVCVSS 3.1HIGH 7.8
  • TI-2017-06273 Code injection in Microsoft .NET Framework KEVCVSS 3.1HIGH 7.8
  • TI-2015-01495 The Windows DirectWrite library, as used in Microsoft .NET Framework 3.0 SP2, 3.5, 3.5.1… KEVCVSS 3.1HIGH 7.8
  • TI-2024-19239 .NET Framework Information Disclosure Vulnerability KEVCVSS 3.1HIGH 7.5
  • TI-2023-18684 ASP.NET Elevation of Privilege Vulnerability CVSS 3.1HIGH 8.8
See all 206 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences