Live › vulnerability › CVE-2021-34486
Go to dashboardMicrosoft Windows Event Tracing has a flaw that lets a local user escalate privileges on the machine. An attacker with a low-privilege foothold can gain SYSTEM-level control, and CISA lists it as actively exploited.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Windows | vendor | – | – |
Check the installed Windows build against Microsoft's CVE-2021-34486 advisory (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34486) and confirm the August 2021 security update is installed.
Install the Microsoft security update for CVE-2021-34486 from August 2021 or later via Windows Update.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Microsoft Windows Event Tracing contains an unspecified vulnerability which can allow for privilege escalation.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2021-34486")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.