CVE-2021-26866
High
Published: 11 March 2021
Published
11 March 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1
7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS Score
0.0047
65.1th percentile
Risk Priority
14
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-26866 is a high-severity Link Following (CWE-59) vulnerability in Microsoft Windows 10. Its CVSS base score is 7.1 (High).
Operationally, ranked in the top 34.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-13650
Vulnerability details
Windows Update Service Elevation of Privilege Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
microsoft
windows 10
1607, 1803, 1809, 1909, 2004
microsoft
windows server 2016
1909, 2004, 20h2, all versions
microsoft
windows server 2019
all versions
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.