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7.8 High

CVE-2026-50649 Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally

Description

Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code locally.

Affected products and versions

Product Affected versions Fixed in
.NET 8.0 8.0 8.0.0 → < 8.0.29 8.0.29
.NET 9.0 9.0 9.0.0 → < 9.0.18 9.0.18
Microsoft Visual Studio 2022 version 17.12 17.12 17.12.0 → < 17.12.22 17.12.22
Microsoft Visual Studio 2022 version 17.14 17.14 17.14.0 → < 17.14.36 17.14.36
Microsoft Visual Studio 2026 version 18.7 18.0 18.0 → < 18.7.4 18.7.4
Microsoft .NET Framework 3.5 3.5 3.5.0 → latest No fix stated
Microsoft .NET Framework 3.5 AND 4.7.2 4.7 4.7.0 → latest No fix stated
Microsoft .NET Framework 3.5 AND 4.8 4.8 4.8.0 → latest No fix stated
Microsoft .NET Framework 3.5 AND 4.8.1 4.8 4.8.1 → latest No fix stated
Show the 5 other branches
Product Affected versions Fixed in
Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 4.7 4.7.0 → < 4.7.4143.0 4.7.4143.0
Microsoft .NET Framework 4.8 4.8 4.8.0 → < 4.8.4803.0 4.8.4803.0
Microsoft .NET Framework 4.8.1 4.8 4.8.0.0 → < 4.8.9340.0 4.8.9340.0
.NET 8.0 runtime 8.0 8.0.0 → < 8.0.29 8.0.29
.NET 9.0 runtime 9.0 9.0.0 → < 9.0.18 9.0.18

References

Timeline

  1. Published
  2. Last modified

Other CVEs of .NET 8.0

The 94 CVEs of .NET 8.0 →
CVE-2026-105016 Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network 9.8 Critical CVE-2026-58280 Uncontrolled recursion in .NET allows an unauthorized attacker to deny service over a network 7.5 High CVE-2026-96233 Out-of-bounds write in ASP.NET Core allows an unauthorized attacker to deny service over a network 7.5 High CVE-2026-96229 Permissive list of allowed inputs in .NET allows an unauthorized attacker to disclose information over a network 6.5 Medium
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