Known exploited vulnerability

CVE-2021-34486

Microsoft Windows Event Tracing Privilege Escalation Vulnerability

What is affected

Vendor Microsoft
Product Windows
Weakness CWE-416

The vulnerability

Microsoft Windows Event Tracing contains an unspecified vulnerability which can allow for privilege escalation.

Required action

Apply updates per vendor instructions.

US federal civilian agencies were required to act by 18 April 2022 under BOD 22-01. The deadline is a compliance date, not a measure of severity — it says nothing about how dangerous the flaw is to anyone else.

Where this comes from

Every field on this page is taken from the CISA Known Exploited Vulnerabilities catalog, last synced 12 Nov 2026, 00:29. Nothing here is our own assessment. For the technical scoring, see the NVD record below.

NVD record ↗ CVE.org record ↗

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