CVE-2026-40406CWE-416

Windows TCP/IP Information Disclosure Vulnerability

High · published May 12, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
63.3
In the wild
Unconfirmed
What it is

Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.01027 · 63.3th percentile
Weakness
CWE-416 · Use After Free
Published
2026-05-12T16:58Z
EPSS history
Timeline
  • 12 MAY 16:58Z
    Windows TCP/IP Information Disclosure Vulnerability
    cvelistv5