CVE-2026-78444
Microsoft Failover Cluster Remote Code Execution Vulnerability
Description
Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.
INFO
Published Date :
Sept. 8, 2026, 6:20 p.m.
Last Modified :
Sept. 8, 2026, 6:38 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-78444
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Install the September 2026 security updates.
- Verify all systems have been updated.
- Reboot affected systems if required.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-78444.
| URL | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78444 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-78444 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-78444
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-78444 vulnerability anywhere in the article.
-
CrowdStrike.com
September 2026 Patch Tuesday: Two Exploited Zero-Days and 113 Critical Vulnerabilities Among 972 CVEs
Microsoft has addressed 972 vulnerabilities in its September 2026 security update release, over double the number of CVEs released in August, and a new Patch Tuesday record. This month's patches inclu ... Read more
The following table lists the changes that have been made to the
CVE-2026-78444 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Sep. 08, 2026
Action Type Old Value New Value Added Description Untrusted pointer dereference in Windows Failover Cluster allows an unauthorized attacker to execute code over a network. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-822 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/78xxx/CVE-2026-78444.json">CVE-2026-78444</a> Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78444