CVE-2026-88102

CRITICAL

INFO Priority: 0.06 BB Relevance: 80/100

Published: 2026-10-13 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

AV: Network

AC: Low

PR: None

UI: None

S: Unchanged

C: High

I: High

A: High

Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.

Vendor	Product	Version
Microsoft	Windows Server 2019	10.0.17763.0 < 10.0.17763.9376
Microsoft	Windows Server 2019	10.0.17763.0 < 10.0.17763.9376
Microsoft	Windows Server 2019	10.0.17763.0 < 10.0.17763.9376
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 < 10.0.17763.9376
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 < 10.0.17763.9376
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 < 10.0.17763.9376
Microsoft	Windows Server 2022	10.0.20348.0 < 10.0.20348.5761
Microsoft	Windows Server 2022	10.0.20348.0 < 10.0.20348.5761
Microsoft	Windows Server 2022	10.0.20348.0 < 10.0.20348.5761
Microsoft	Windows Server 2025	10.0.26100.0 < 10.0.26100.33650
Microsoft	Windows Server 2025	10.0.26100.0 < 10.0.26100.33650
Microsoft	Windows Server 2025	10.0.26100.0 < 10.0.26100.33650
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 < 10.0.26100.33650
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 < 10.0.26100.33650
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 < 10.0.26100.33650
microsoft	windows_server_2019	< 10.0.17763.9376
microsoft	windows_server_2022	< 10.0.20348.5761
microsoft	windows_server_2025	< 10.0.26100.33650

vendor-advisory patch

80 / 100

✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

9.8 / 10.0 v3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

0.63%

Raw Score 0.006340

Percentile 50.3%

Date 2026-10-29

2026-10-29

0.00634

2026-10-28

0.00634

mitre ref →