High severity7.0NVD Advisory· Published Mar 11, 2021· Updated Aug 19, 2026
CVE-2021-26873
CVE-2021-26873
Description
Windows User Profile Service Elevation of Privilege Vulnerability
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
31cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
- 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_1507:*:*:*:*:*:*:x86:*range: 10.0.0
- cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x86:*range: 10.0.0
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:x86:*range: 6.3.0
- cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*range: 6.2.0
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*+ 4 more
- cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*range: 10.0.0
cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:*+ 1 more
- cpe:2.3:o:microsoft:windows_10_20H2:*:*:*:*:*:*:x86:*range: 10.0.0
- cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*range: 10.0.0
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
Patches
Vulnerability mechanics
References
3- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26873nvdPatchVendor Advisory
- www.zerodayinitiative.com/advisories/ZDI-21-283/nvdThird Party Advisory
- msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26873nvd
News mentions
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