CVE-2021-34458

—

CVSS 3.1

9.9 critical

EPSS

3%p85

Published

Jul 16, 2021 (Jul 16, 2021)

Modified

Aug 10, 2026

Description

Windows Kernel Remote Code Execution Vulnerability

Vendors: microsoft
Products: windows server 2016, windows server 2019
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (2.6%)

In the news3 stories

Update Your Windows PCs to Patch 117 New Flaws, Including 9 Zero

The Hacker NewsJul 17, 11:52 UTC · Jul 17, 2021Vulnerability in the wildCVE-2021-34527 CVE-2021-31979 CVE-2021-33771+9 CVEs

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Microsoft Patch Tuesday, July 2021 Edition

Krebs on SecurityJul 15, 00:00 UTC · Jul 15, 2021Vulnerability in the wildCVE-2021-34527 CVE-2021-34448 CVE-2021-33771+5 CVEs

60

July 2021 Patch Tuesday: Microsoft fixes 4 actively exploited bugs

Help Net SecurityJul 13, 00:00 UTC · Jul 13, 2021Vulnerability in the wildCVE-2021-34527 CVE-2021-34448 CVE-2021-33771+6 CVEs

60