Description
Windows HTTP.sys Elevation of Privilege Vulnerability
References (1)
Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26442
Scores
CVSS v3
7.0
EPSS
0.0077
EPSS Percentile
51.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
Status
published
Products (19)
microsoft/windows_10
microsoft/windows_10
20h2
microsoft/windows_10
21h1
microsoft/windows_10
1809
microsoft/windows_10
1909
microsoft/windows_10
2004
microsoft/windows_11
(2 CPE variants)
microsoft/windows_7
microsoft/windows_8.1
microsoft/windows_rt_8.1
... and 9 more
Published
Oct 13, 2021
Tracked Since
Feb 18, 2026