CVE-2026-40413

May 13, 2026, 3:34 p.m.

7.4
High

Description

Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over an adjacent network.

Product(s) Impacted

Vendor Product Versions
Microsoft
  • Windows Tcp/ip
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-476
NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a microsoft windows_tcp/ip / / / / / / / /

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40413

Tags

CWE-476
[email protected]
2026-05-12
CVE-2026-40413

CVSS Score

7.4 / 10

CVSS Data - 3.1

  • Attack Vector: ADJACENT_NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: CHANGED
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH

    • CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

    View Vector String

Timeline

Published: May 12, 2026, 6:17 p.m.
Last Modified: May 13, 2026, 3:34 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.