CVE-2026-42915CWE-131

Microsoft Windows VMSwitch Denial of Service Vulnerability

Medium · published June 9, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
33.0
In the wild
Unconfirmed
What it is

Incorrect calculation of buffer size in Windows VMSwitch allows an authorized attacker to deny service locally.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00399 · 33.0th percentile
Weakness
CWE-131 · Incorrect Calculation of Buffer Size
Published
2026-06-09T17:06Z
EPSS history
Timeline
  • 09 JUN 17:06Z
    Microsoft Windows VMSwitch Denial of Service Vulnerability
    cvelistv5