CVEvulnerability

CVE-2021-34486

7.8 HIGH Known exploited Published 2021-08-12 Modified 2026-08-10 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Windows Event Tracing Privilege Escalation Vulnerability — Microsoft Windows

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

Added to KEV: 2022-03-28
Remediation due: 2022-04-18
Ransomware use: Unknown
Required action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-34486

Status: Analyzed
Published: 2021-08-12
Last modified: 2026-08-10
Assigner: [email protected]
CVSS 3.1 ([email protected]): 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected]): 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected]): 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
Weaknesses: CWE-416

Description

Windows Event Tracing Elevation of Privilege Vulnerability

Affected configurations

• microsoft windows 10 1809 (< 10.0.17763.2114) • microsoft windows 10 1909 (< 10.0.18363.1734) • microsoft windows 10 2004 (< 10.0.19041.1165) • microsoft windows 10 20h2 (< 10.0.19042.1165) • microsoft windows 10 21h1 (< 10.0.19043.1165) • microsoft windows server 2004 (< 10.0.19041.1165) • microsoft windows server 2019 (< 10.0.17763.2114) • microsoft windows server 20h2 (< 10.0.19042.1165)

Weakness · CWE (1)

CWE-416 Use After Free weakness

References