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CVE-2020-16877

Windows Elevation of Privilege Vulnerability

7.1 High

<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>

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
High

Exploit likelihood

0.96%Down 3.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 7.1

Windows Elevation of Privilege Vulnerability

<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>

Record
CVE-2020-16877
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C
Updated
2026-11-02
EUVDEUVD-2020-8835 7.1

<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>

Record
EUVD-2020-8835
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C
Updated
2026-11-03
GitHub AdvisoriesGHSA-m26m-f94h-984c 7.1

An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse...

An elevation of privilege vulnerability exists when Microsoft Windows improperly handles reparse points, aka 'Windows Elevation of Privilege Vulnerability'.

Record
GHSA-m26m-f94h-984c
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness
CWE-269
Updated
2026-11-02
NVD 7.1

<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>

Record
CVE-2020-16877
CVSS 3.1
7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS 2.0
3.6 LowAV:L/AC:L/Au:N/C:N/I:P/A:P
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-16877 is a high vulnerability (CVSS 7.1) in Microsoft Windows 10 Version 1903 For 32-bit Systems, published October 16, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.96%, the 61st percentile. No source names a fixed version.

References

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