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CVE-2026-96864 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-13T19:00:34.732Z and has not been modified since then. The NVD entry is currently 9.8 CRITICAL. This critical remote code execution vulnerability in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute code over a network. Defenders should prioritize verifying exposure and applying patches to prevent exploitation. The affected products include Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025. Confirm whether these

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
CRITICAL 9.8
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 Windows 10, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025 systems should assess exposure and apply patches.

Why it matters

CVE-2026-96864 is a critical remote code execution vulnerability in Microsoft Failover Cluster Virtual Driver. Defenders should prioritize verifying exposure and applying patches to prevent exploitation.

  • Verify exposure of Microsoft Failover Cluster Virtual Driver on affected systems
  • Apply patches provided by Microsoft to prevent exploitation
  • Monitor network traffic for suspicious activity related to the vulnerability
  • Verify that compensating controls are in place for unpatched systems

Technical summary

The vulnerability is a double free in Microsoft Failover Cluster Virtual Driver, which allows an unauthorized attacker to execute code over a network. The affected products are Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025.

Defensive priority

Defenders should prioritize verifying exposure and applying patches for Microsoft Failover Cluster Virtual Driver on Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025.

Recommended defensive actions

  • Verify exposure of Microsoft Failover Cluster Virtual Driver on Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022
  • Apply patches provided by Microsoft for the affected products
  • Monitor network traffic for suspicious activity related to the vulnerability

Evidence notes

The CVE record and source item provide details on the vulnerability in Microsoft Failover Cluster Virtual Driver, which allows an unauthorized attacker to execute code over a network. The affected products and versions are listed in the source item.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-96864 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-96864

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

  • CVE-2026-96864 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-96864

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

Supplemental references

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.