⚠ Actively exploited
Added to CISA KEV on 2022-03-28. Federal agencies required to patch by 2022-04-18. Required action: Apply updates per vendor instructions..

CVE-2021-34486

CWE-416 — Use After FreeCWE-269 — Improper Privilege Management6 documents6 sources
Severity
7.8HIGH
EPSS
36.5%
top 2.88%
CISA KEV
KEV
Added 2022-03-28
Due 2022-04-18
Exploit
Exploited in wild
Active exploitation observed
Affected products
16
Microsoft Windows 10 Version 1809Microsoft Windows 10 Version 1909Microsoft Windows 10 Version 2004+13 more
Timeline
PublishedAug 12
KEV addedMar 28
KEV dueApr 18
Latest updateMay 24
CISA Required Action: Apply updates per vendor instructions.

Description

Windows Event Tracing Elevation of Privilege Vulnerability

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages15 packages

▶NVDmicrosoft/windows< 10.0.19041.1165+2
▶NVDmicrosoft/windows_10_1809< 10.0.17763.2114
▶NVDmicrosoft/windows_10_1909< 10.0.18363.1734
▶NVDmicrosoft/windows_10_2004< 10.0.19041.1165
▶NVDmicrosoft/windows_10_20h2< 10.0.19042.1165

Patches

Patch: portal.msrc.microsoft.com ↗Patch: portal.msrc.microsoft.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-793m-wq3j-whvr: Windows Event Tracing Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26425, CVE-2021-34487↗2022-05-24
▶
CVEList
Windows Event Tracing Elevation of Privilege Vulnerability↗2021-08-12
▶
VulnCheck
Microsoft Windows Event Tracing Privilege Escalation Vulnerability↗2021
▶

📋Vendor Advisories

2
CISA
Microsoft Windows Event Tracing Privilege Escalation Vulnerability↗2022-03-28
▶
Microsoft
Windows Event Tracing Elevation of Privilege Vulnerability↗2021-08-10
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CVE-2021-34486 (HIGH CVSS 7.8) | Windows Event Tracing Elevation of | cvebase.io