CVE-2021-24107: Windows Event Tracing Information Disclosure Vulnerability

Severity: low (CVSS 2.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-11 · updated 2026-08-19

Description

Windows Event Tracing Information Disclosure Vulnerability

Affected products

Microsoft Windows 10 Version 1607: 20h2, 1607, 1803, 1809, 1909, 2004
Microsoft Windows 7: all versions
Microsoft Windows 8.1: all versions
Microsoft Windows RT 8.1: all versions
Microsoft Windows Server 2008: r2-sp1
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: 20h2, 1909, 2004
Microsoft Windows Server 2019: all versions
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.18874 — fixed in 10.0.10240.18874
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.4283 — fixed in 10.0.14393.4283
Microsoft Windows 10 1803: from 10.0.0 before 10.0.17134.2087 — fixed in 10.0.17134.2087
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.1817 — fixed in 10.0.17763.1817
Microsoft Windows 10 1909: from 10.0.0 before 10.0.18363.1440 — fixed in 10.0.18363.1440
Microsoft Windows 10 2004: from 10.0.0 before 10.0.19043.867 — fixed in 10.0.19043.867
Microsoft Windows 10 20H2: from 10.0.0 before 10.0.19043.867 — fixed in 10.0.19043.867
Microsoft Windows 7: from 6.1.0 before 6.1.7601.24566 — fixed in 6.1.7601.24566
Microsoft Windows 7 Service Pack 1: from 6.1.0 before 6.1.7601.24566 — fixed in 6.1.7601.24566
Microsoft Windows 8.1: from 6.3.0 before 6.3.9600.19968 — fixed in 6.3.9600.19968
Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.24566 — fixed in 6.1.7601.24566
Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.21070 — fixed in 6.0.6003.21070
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.23298 — fixed in 6.2.9200.23298
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.19968 — fixed in 6.3.9600.19968
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.4283 — fixed in 10.0.14393.4283
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.1817 — fixed in 10.0.17763.1817
Microsoft Windows Server, version 1909 (Server Core installation): from 10.0.0 before 10.0.18363.1440 — fixed in 10.0.18363.1440
Microsoft Windows Server version 2004: from 10.0.0 before 10.0.19043.867 — fixed in 10.0.19043.867
Microsoft Windows Server version 20H2: from 10.0.0 before 10.0.19043.867 — fixed in 10.0.19043.867

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.18874; Microsoft Windows 10 1607 10.0.14393.4283; Microsoft Windows 10 1803 10.0.17134.2087; Microsoft Windows 10 10.0.17763.1817; Microsoft Windows 10 1909 10.0.18363.1440; Microsoft Windows 10 2004 10.0.19043.867; Microsoft Windows 10 20H2 10.0.19043.867; Microsoft Windows 7 6.1.7601.24566; Microsoft Windows 7 Service Pack 1 6.1.7601.24566; Microsoft Windows 8.1 6.3.9600.19968; Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.24566; Microsoft Windows Server 2008 Service Pack 2 6.0.6003.21070. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2021-24107 or the next vulnerability affects your stack