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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MicrosoftCVE-2026-50528

Microsoft .NET 10.0 runtime: improper authorization

Microsoft

CVE-2026-50528 · Published Jul 14, 2026 · updated Oct 28, 2026

High8.2
Fix: upgrade to 10.0.10 or later (6 fixed versions below)
Microsoft advisory

Incorrect authorization in .NET allows an unauthorized attacker to bypass a security feature over a network.

Affected versions

PackageAffectedFixed in
.NET 10.0 runtime
Product
>= 10.0.0, < 10.0.1010.0.10
.NET 8.0 runtime
Product
>= 8.0.0, < 8.0.298.0.29
.NET 9.0 runtime
Product
>= 9.0.0, < 9.0.189.0.18
Microsoft Visual Studio 2022 version 17.12
Product
>= 17.12.0, < 17.12.2217.12.22
Microsoft Visual Studio 2022 version 17.14
Product
>= 17.14.0, < 17.14.3617.14.36
Microsoft Visual Studio 2026 version 18.7
Product
>= 18.0, < 18.7.418.7.4

Changes since it was listed

Fixed inNov 3Fixed in: .NET 10.0 10.0.10, .NET 8.0 8.0.29, .NET 9.0 9.0.18 to .NET 10.0 runtime 10.0.10, .NET 8.0 runtime 8.0.29, .NET 9.0 runtime 9.0.18
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-302, CWE-636, CWE-863

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