CVE-2026-96864

CRITICAL CVSS 3.1: 9.8 EPSS 0.63%
Updated Oct 28, 2026
Microsoft
Parameter Value
CVSS 9.8 (CRITICAL)
Affected Versions 10.0.14393.0 — 6.3.9600.23470
Fixed In 6.2.9200.26434
Type CWE-415 (Double Free)
Vendor Microsoft
Public PoC No

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

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 21

Configuration From (including) Up to (excluding)
Microsoft Windows_Server_2012
cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*
6.2.9200.0 6.2.9200.26434
Microsoft Windows_Server_2012_R2
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*
6.3.9600.0 6.3.9600.23470
Microsoft Windows_Server_2012_R2
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*
6.3.9600.0 6.3.9600.23470
Microsoft Windows_10_1607
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
10.0.14393.0 10.0.14393.9612
Microsoft Windows_Server_2016
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
10.0.14393.0 10.0.14393.9612
Microsoft Windows_Server_2016
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
10.0.14393.0 10.0.14393.9612
Microsoft Windows_10_1809
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
10.0.17763.0 10.0.17763.9376
Microsoft Windows_Server_2019
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
10.0.17763.0 10.0.17763.9376
Microsoft Windows_Server_2025
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
10.0.26100.0 10.0.26100.33650
Microsoft Windows_Server_2025
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
10.0.26100.0 10.0.26100.33650
Microsoft Windows_Server_2012
cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*
6.2.9200.0 6.2.9200.26434
Microsoft Windows_Server_2019
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
10.0.17763.0 10.0.17763.9376
Microsoft Windows_Server_2022
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
10.0.20348.0 10.0.20348.5761
Microsoft Windows_10_1607
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
— 10.0.14393.9612
Microsoft Windows_10_1809
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
— 10.0.17763.9376
Microsoft Windows_Server_2012
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
— —
Microsoft Windows_Server_2012
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
— —
Microsoft Windows_Server_2016
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:x64:*
— 10.0.14393.9612
Microsoft Windows_Server_2019
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:x64:*
— 10.0.17763.9376
Microsoft Windows_Server_2022
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:x64:*
— 10.0.20348.5761
Microsoft Windows_Server_2025
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*
— 10.0.26100.33650