CVE-2026-45491

MEDIUM

Microsoft .NET 10.0 - .NET Tampering Vulnerability

Title source: rule
STIX 2.1

Description

Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
.NET Tampering Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45491

Scores

CVSS v3 6.2
EPSS 0.0039
EPSS Percentile 31.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-59
Status published
Products (14)
microsoft/.net 8.0.0 - 8.0.28
Microsoft/.NET 10.0 10.0.0 - 10.0.9
Microsoft/.NET 8.0 8.0 - 8.0.28
Microsoft/.NET 8.0 8.0.0 - 8.0.28
Microsoft/.NET 9.0 9.0.0 - 9.0.17
nuget/Microsoft.NETCore.App.Runtime.linux-x64 10.0.0 - 10.0.9NuGet
nuget/Microsoft.NETCore.App.Runtime.linux-x64 8.0.0 - 8.0.28NuGet
nuget/Microsoft.NETCore.App.Runtime.linux-x64 9.0.0 - 9.0.17NuGet
nuget/Microsoft.NETCore.App.Runtime.osx-arm64 10.0.0 - 10.0.9NuGet
nuget/Microsoft.NETCore.App.Runtime.osx-arm64 8.0.0 - 8.0.28NuGet
... and 4 more
Published Jun 09, 2026
Tracked Since Jun 09, 2026