CVE-2026-88102
Microsoft Failover Cluster Remote Code Execution Vulnerability
Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Failover Cluster Remote Code Execution Vulnerability
Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
- Record
CVE-2026-88102- CVSS 3.1
- 9.8 Critical
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 - Weakness
- CWE-416
- Updated
- 2026-11-10
EUVDEUVD-2026-99653
Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
- Record
EUVD-2026-99653- CVSS 3.1
- 9.8 Critical
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 - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-8vp3-xxj6-qx5c
Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a...
Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
- Record
GHSA-8vp3-xxj6-qx5c- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
NVD
Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
- Record
CVE-2026-88102- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-88102 is a critical vulnerability (CVSS 9.8) in Microsoft Windows Server 2019, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.63%, the 50th percentile. No source names a fixed version.