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CVE-2026-102869

.NET and Visual Studio Elevation of Privilege Vulnerability

Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.74%Chance of exploitation activity in the next 30 days, higher than 54% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0Also 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0, 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0 and 6 moreCVE List
Published13 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

  • 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2CVE List
  • 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0Microsoft .NET Framework 3.5 AND 4.7.2CVE List
  • 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0Microsoft .NET Framework 3.5 AND 4.8CVE List
  • 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0Microsoft .NET Framework 3.5 AND 4.8.1CVE List
  • 4.7.4150.0Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2CVE List
  • 4.8.4811.0Microsoft .NET Framework 4.8CVE List
Show all 9 fixed versions
  • 4.8.9363.0Microsoft .NET Framework 4.8.1CVE List
  • 17.14.42Microsoft Visual Studio 2022 version 17.14CVE List
  • 18.10.4Microsoft Visual Studio 2026 version 18.10CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Vendor and government advisories 1

Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

Description

Access of resource using incompatible type ('type confusion') in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.

Text from CVE List

Affected versions 9

  • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2affected: 3.0.0.0 before 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0CVE List
  • Microsoft .NET Framework 3.5 AND 4.7.2affected: 4.7.0 before 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0CVE List
  • Microsoft .NET Framework 3.5 AND 4.8affected: 4.8.0 before 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0CVE List
  • Microsoft .NET Framework 3.5 AND 4.8.1affected: 4.8.1 before 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0CVE List
  • Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2affected: 4.7.0 before 4.7.4150.0CVE List
  • Microsoft .NET Framework 4.8affected: 4.8.0 before 4.8.4811.0CVE List
  • Microsoft .NET Framework 4.8.1affected: 4.8.0.0 before 4.8.9363.0CVE List
  • Microsoft Visual Studio 2022 version 17.14affected: 17.14.0 before 17.14.42CVE List
  • Microsoft Visual Studio 2026 version 18.10affected: 18.10.0 before 18.10.4CVE List

References 1