CVE-2021-34471
Microsoft Defender Elevation of Privilege Vulnerability
HIGH
7.8
CVSS Score
Published: August 12, 2021 at 06:11 PM UTC
Updated: August 10, 2026 at 04:28 PM UTC
1 product affected across 1 vendorMalware Protection Engine
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Severity
HIGH7.8
Exploit prediction
EPSS 0.5%
Description
Microsoft Windows Defender Elevation of Privilege Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 1.1.18400.4, 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 (2)
PatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34471Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34471CVSS
7.8HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-269
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