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CVE-2026-96238

6.5 medium SSVC exploitation: none Published
NVD · CVE.org

Origin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network.

Fix

Microsoft's update · Important

  • KB5130035 — .NET 9.0 runtime installed on Windows, .NET 9.0 runtime installed on Linux, .NET 9.0 runtime installed on Mac OS · build 9.0.122
  • Release Notes — .NET 11.0 runtime installed on Windows, .NET 11.0 runtime installed on Linux, .NET 11.0 runtime installed on Mac OS · build 11.0.100-rc.2
  • KB5130034 — .NET 8.0 runtime installed on Windows, .NET 8.0 runtime installed on Linux, .NET 8.0 runtime installed on Mac OS · build 8.0.426
  • KB5130036 — .NET 10.0 runtime installed on Windows, .NET 10.0 runtime installed on Linux, .NET 10.0 runtime installed on Mac OS · build 10.0.113
  • Release Notes — Microsoft Visual Studio 2026 version 18.10 · build 18.10.4 · restart required
  • Release Notes — Microsoft Visual Studio 2022 version 17.14 · build 17.14.42 · restart required

From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-28 · Exploitation Less Likely.

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 4

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-22 21:55
  2. StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 22:19
  3. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 19:40
  4. First seenCVSS 6.5NVD modified 2026-10-13 20:19

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1