CVE-2020-1054
Microsoft Win32k Privilege Escalation Vulnerability
CVSS
—
No CVSS
EPSS
52.8%
p99
KEV
YES
Nov 3, 2021
Exploit Today
80
0-100
Published: — · Last modified: —
52.8%EPSS · 30 days52.8%
2026-06-302026-07-16
Product
Microsoft / Win32k
Vulnerability
Microsoft Win32k Privilege Escalation Vulnerability
Added to KEV
Nov 3, 2021
Remediate by
May 3, 2022
Known ransomware use
No
Summary description
Microsoft Win32k contains a privilege escalation vulnerability when the Windows kernel-mode driver fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2020-1054
CVECVSSEPSSKEVRExploitTitleMod.
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