CVE-2026-78444
Microsoft Failover Cluster Remote Code Execution Vulnerability
Untrusted pointer dereference 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
- High
- 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
Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
- Record
CVE-2026-78444- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Weakness
- CWE-822
- Updated
- 2026-11-10
EUVDEUVD-2026-73800
Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
- Record
EUVD-2026-73800- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-vp2w-vv5p-6vcv
Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to...
Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
- Record
GHSA-vp2w-vv5p-6vcv- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-822
- Updated
- 2026-11-02
NVD
Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
- Record
CVE-2026-78444- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-822
- 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-2026-78444 is a high vulnerability (CVSS 8.1) in Microsoft Windows 10 Version 1809, published September 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.71%, the 53rd percentile. No source names a fixed version.