CVE-2020-16877

HIGH

Microsoft Windows - Privilege Escalation

Title source: llm
STIX 2.1

Description

<p>An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points. An attacker who successfully exploited this vulnerability could overwrite or delete a targeted file that would normally require elevated permissions.</p> <p>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 overwrite or delete files.</p> <p>The security update addresses the vulnerability by correcting how Windows handles reparse points.</p>

References (1)

Core 1
Core References

Scores

CVSS v3 7.1
EPSS 0.0096
EPSS Percentile 57.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

Status published
Products (6)
microsoft/windows_10 1903
microsoft/windows_10 1909
microsoft/windows_10 2004
microsoft/windows_server_2016 1903
microsoft/windows_server_2016 1909
microsoft/windows_server_2016 2004
Published Oct 16, 2020
Tracked Since Feb 18, 2026