CVE-2021-31971
Windows HTML Platforms Security Feature Bypass Vulnerability
MEDIUM
6.8
CVSS Score
Published: June 8, 2021 at 10:46 PM UTC
Updated: June 17, 2026 at 03:52 AM UTC
15 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012
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Severity
MEDIUM6.8
Exploit prediction
EPSS 2%
Description
Windows HTML Platforms Security Feature Bypass Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 10.0.10240.18967, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.14393.4467, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.17763.1999, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.18363.1621, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.7601.25632, so it looks safe — our inference, not a vendor statement
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.0.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.3.9600.20045, so it looks safe — our inference, not a vendor statement
6.0.0 ≤ v < 6.0.6003.211376.0.0 ≤ v < publication6.1.0 ≤ v < 6.1.7601.256326.1.0 ≤ v < publication6.0.06.1.0r2 sp1sp2
Affected range stops below 6.0.6003.21137, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.7601.25632, so it looks safe — our inference, not a vendor statement
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
6.2.0 ≤ v < 1.0.0.06.2.0 ≤ v < 6.2.9200.233726.3.0 ≤ v < 1.0.0.06.3.0 ≤ v < 6.3.9600.200451.0.0.06.2.06.2.9200.233726.3.0r2
Affected range stops below 1.0.0.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.2.9200.23372, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.3.9600.20045, 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:
Patch and advisory references
References (1)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31971CVSS
6.8MEDIUMmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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