CVE-2020-1377

7.8 HIGH

Published: August 17, 2020 Modified: February 23, 2026

Description

An elevation of privilege vulnerability exists when the Windows Kernel API improperly handles registry objects in memory. An attacker who successfully exploited the vulnerability could gain elevated privileges on a targeted system. A locally authenticated attacker could exploit this vulnerability by running a specially crafted application. The security update addresses the vulnerability by helping to ensure that the Windows Kernel API properly handles objects in memory.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://packetstormsecurity.com/files/158938/Microsoft-Windows-CmpDoReDoCreateKey-Arbitrary-Registry-Key-Creation-Privilege-Escalation.html

Source: secure@microsoft.com

Third Party Advisory VDB Entry

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1377

Source: secure@microsoft.com

Patch Vendor Advisory

http://packetstormsecurity.com/files/158938/Microsoft-Windows-CmpDoReDoCreateKey-Arbitrary-Registry-Key-Creation-Privilege-Escalation.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1377

Source: af854a3a-2127-422b-91ae-364da2661108

Patch Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.8 / 10.0

EPSS (Exploit Probability)

0.1%

31th percentile

Exploitation Status

Not in CISA KEV

Affected Vendors

microsoft