CVE-2026-96864

Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute…

Risk score: 74/100
CVSS: 9.8 v3.1
Exploit chance (30 days): 0.6%
Published: 13 Oct 2026

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What to know

What it is: Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute code over a network.
Affected: See advisory
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Amber

CVSS 9.8 critical
Remotely exploitable without logging in

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96864

Original description

Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized attacker to execute code over a network.

Last activity 13 Oct 2026. Patch Forecast updates every hour.