CVE-2026-40413: CWE-476: NULL Pointer Dereference in Microsoft Windows 10 Version 1607
Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over an adjacent network.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-40413 and categorized under CWE-476 (NULL Pointer Dereference), affects the TCP/IP implementation in Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It allows an attacker with network adjacency to trigger a null pointer dereference, leading to a denial of service (system crash or reboot). The CVSS 3.1 base score is 7.4, reflecting high severity due to the ease of attack (low complexity, no privileges or user interaction required) and the impact on availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation results in denial of service, causing affected systems to crash or become unresponsive. There is no impact on confidentiality or integrity. The attack requires network adjacency but no privileges or user interaction, making it a significant availability risk for affected Windows 10 Version 1607 systems.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40413 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
CVE-2026-40413: CWE-476: NULL Pointer Dereference in Microsoft Windows 10 Version 1607
Description
Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over an adjacent network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-40413 and categorized under CWE-476 (NULL Pointer Dereference), affects the TCP/IP implementation in Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It allows an attacker with network adjacency to trigger a null pointer dereference, leading to a denial of service (system crash or reboot). The CVSS 3.1 base score is 7.4, reflecting high severity due to the ease of attack (low complexity, no privileges or user interaction required) and the impact on availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation results in denial of service, causing affected systems to crash or become unresponsive. There is no impact on confidentiality or integrity. The attack requires network adjacency but no privileges or user interaction, making it a significant availability risk for affected Windows 10 Version 1607 systems.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40413 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-13T00:27:50.798Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40413","vendor":"Microsoft"}]
Threat ID: 6a036557cbff5d861008c9ca
Added to database: 5/12/2026, 5:37:27 PM
Last enriched: 5/12/2026, 6:23:24 PM
Last updated: 5/13/2026, 4:50:54 AM
Views: 19
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