CVE-2021-26866
Medium
Elevated severity or exploit probability.
CVSS base
7.1
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS — probability of exploitation (30 days)
1.1%
65.4th percentile
CISA KEV
Not listed
Weakness / dates
CWE-59
Published 2021-03-11 · modified 2026-08-19
Description
Windows Update Service Elevation of Privilege Vulnerability