CVE-2020-1054

HighActively exploited (CISA KEV)

Description

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.

SeverityHigh
CVSS7.0
Exploit probability—
ProductMicrosoft Win32k
PublishedMay 21, 2020
First seenMay 21, 2020
Added to KEVNov 3, 2021

How to fix

CISA required action

Apply updates per vendor instructions.

CISA due date: May 3, 2022

Affected products

ProductAffected versionsFixed in
microsoft windows_10_1507No range specified—
microsoft windows_10_1607No range specified—
microsoft windows_10_1709No range specified—
microsoft windows_10_1803No range specified—
microsoft windows_10_1809No range specified—
microsoft windows_10_1903No range specified—
microsoft windows_10_1909No range specified—
microsoft windows_7No range specified—
microsoft windows_8.1No range specified—
microsoft windows_rt_8.1No range specified—
microsoft windows_server_1803No range specified—
microsoft windows_server_1903No range specified—
microsoft windows_server_1909No range specified—
microsoft windows_server_2008No range specified, r2—
microsoft windows_server_2012No range specified, r2—
microsoft windows_server_2016No range specified—
microsoft windows_server_2019No range specified—

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