CVE-2021-1729
Windows Update Stack Setup Elevation of Privilege Vulnerability
HIGH
7.1
CVSS Score
Published: March 11, 2021 at 02:58 PM UTC
Updated: August 19, 2026 at 05:17 PM UTC
11 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows 10 1809
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Severity
HIGH7.1
Exploit prediction
EPSS 1.0%
Description
Windows Update Stack Setup Elevation of Privilege Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
10.0.0 ≤ v < 10.0.17134.208710.0.0 ≤ v < 10.0.17763.181710.0.0 ≤ v < 10.0.19043.86710.0.17763.0 ≤ v < 10.0.17763.181710.0.010.0.17763.0
Affected range stops below 10.0.17134.2087, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.17763.1817, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.19043.867, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.18363.144010.0.0
Affected range stops below 10.0.18363.1440, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.18363.144010.0.0
Affected range stops below 10.0.18363.1440, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.19043.86710.0.0
Affected range stops below 10.0.19043.867, so it looks safe — our inference, not a vendor statement
10.0.17763.0 ≤ v < 10.0.17763.181710.0.17763.0
Affected range stops below 10.0.17763.1817, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.17134.208710.0.0
Affected range stops below 10.0.17134.2087, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.19043.86710.0.0
Affected range stops below 10.0.19043.867, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.19043.86710.0.0
Affected range stops below 10.0.19043.867, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
PatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1729Third Party Advisory
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-21-284/Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1729CVSS
7.1HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-269
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