CVE-2021-34476

HIGH

Windows - Denial of Service in Bowser.sys

Title source: llm

Bowser.sys Denial of Service Vulnerability

Core 1

Core References

Patch, Vendor Advisory x_refsource_misc

CVSS v3 7.5

EPSS 0.0303

EPSS Percentile 86.1%

Attack Vector NETWORK

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

Status published

Products (17)

microsoft/windows_10

microsoft/windows_10 20h2

microsoft/windows_10 21h1

microsoft/windows_10 1607

microsoft/windows_10 1809

microsoft/windows_10 1909

microsoft/windows_10 2004

microsoft/windows_7

microsoft/windows_8.1

microsoft/windows_server_2008

... and 7 more

Published Jul 14, 2021

Tracked Since Feb 18, 2026