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PatchSiren cyber security CVE debrief

CVE-2026-96224 Microsoft CVE debrief

A .NET remote code execution vulnerability exists due to an out-of-bounds write in .NET, allowing unauthorized attackers to execute code over a network. Multiple .NET and .NET Framework versions are affected, including .NET 8.0, .NET 9.0, .NET 10.0, .NET 11.0, and various .NET Framework versions. Microsoft has released patches for these vulnerabilities.

Vendor
Microsoft
Product
.NET 10.0
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-14
Advisory published
2026-10-13
Advisory updated
2026-10-14

Who should care

Defenders responsible for .NET and .NET Framework deployments should assess exposure and prioritize patching affected versions. This includes operators managing .NET applications, platform administrators, vulnerability management teams, and security teams responsible for monitoring and defending .NET and .NET Framework environments.

Why it matters

CVE-2026-96224 is a .NET remote code execution vulnerability that allows unauthorized attackers to execute code over a network. Defenders should prioritize patching affected .NET and .NET Framework versions to prevent potential attacks.

  • Potential remote code execution attacks
  • Exposure of sensitive data or systems
  • Disruption of critical services
  • Compromise of trust in affected systems

Technical summary

The vulnerability exists due to an out-of-bounds write in .NET, allowing unauthorized attackers to execute code over a network. Multiple .NET and .NET Framework versions are affected, including .NET 8.0, .NET 9.0, .NET 10.0, .NET 11.0, and various .NET Framework versions.

Defensive priority

Defenders should prioritize patching affected .NET and .NET Framework versions to prevent potential remote code execution attacks.

Recommended defensive actions

  • Patch affected .NET and .NET Framework versions
  • Verify inventory of .NET and .NET Framework versions
  • Monitor for potential remote code execution attempts

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft has released a patch for the vulnerability. Evidence is limited to public CVE and NVD records. Defenders should verify affected .NET and .NET Framework deployments and review Microsoft's official advisory for specific guidance on patching and mitigation. No additional information is available on exploitation or affected scope beyond vendor-confirmed versions.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-96224 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-96224

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-96224 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-96224

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • .NET Remote Code Execution Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/96xxx/CVE-2026-96224.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96224

    Supplemental source - vendor-advisory, patch

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.