CVE-2026-40401

high

Description

Windows TCP/IP Denial of Service Vulnerability

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40401

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29662

Details

Source: Mitre, NVD

Published: 2026-05-12

Updated: 2026-06-01

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

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

Severity: High

EPSS

EPSS: 0.00422