CVE-2026-40414 Details
Description
Windows TCP/IP Denial of Service Vulnerability
A null pointer dereference vulnerability has been identified in the Windows TCP/IP stack. This issue allows an unauthorized attacker to cause a denial-of-service condition on the affected system, disrupting network services. The vulnerability is present in several Windows versions and can be exploited by sending specially crafted network traffic over an adjacent network.
Users can apply the security update provided by Microsoft to address this vulnerability. Instructions for downloading the security update are available on the Microsoft Update Catalog.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 12, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40414 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 10 1607 | < 10.0.14393.9140 |
CPE
Remediation
| |
| microsoft windows 10 1809 | < 10.0.17763.8755 |
CPE
Remediation
| |
| microsoft windows 10 21h2 | < 10.0.19044.7291 |
CPE
Remediation
| |
| microsoft windows 10 22h2 | < 10.0.19045.7291 |
CPE
Remediation
| |
| microsoft windows 11 23h2 | < 10.0.22631.7079 |
CPE
Remediation
| |
| microsoft windows 11 24h2 | < 10.0.26100.8390 |
CPE
Remediation
| |
| microsoft windows 11 25h2 | < 10.0.26200.8390 |
CPE
Remediation
| |
| microsoft windows 11 26h1 | < 10.0.28000.2113 |
CPE
Remediation
| |
| microsoft windows server 2012 | r2 |
CPE
Remediation
| |
| microsoft windows server 2016 | < 10.0.14393.9140 |
CPE
Remediation
| |
| microsoft windows server 2019 | < 10.0.17763.8755 |
CPE
Remediation
| |
| microsoft windows server 2022 | < 10.0.20348.5074 |
CPE
Remediation
| |
| microsoft windows server 2022 23h2 | < 10.0.25398.2330 |
CPE
Remediation
| |
| microsoft windows server 2025 | < 10.0.26100.32772 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 1, 2026 | CVE Modified | [email protected] |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 12, 2026 | New CVE Received | [email protected] |