VYPR
High severity7.8NVD Advisory· Published Mar 11, 2021· Updated Jun 17, 2026

CVE-2021-26889

CVE-2021-26889

Description

Windows Update Stack Elevation of Privilege Vulnerability

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

15
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*+ 1 more
    • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*range: 10.0.0
    • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*range: 10.0.0
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*range: 10.0.0
    • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:*+ 5 more
    • cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:*range: 10.0.0
    • cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:*
    Range: 10.0.0
  • cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

2

News mentions

0

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