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CVE-2020-16875

Microsoft Exchange Server Remote Code Execution Vulnerability

Published: Sep 11, 2020Updated: Feb 23, 2026 Sources: CVE List NVD BDUCWE-74
8.4HIGH
NVD MITRE
EPSS Score
47.1%
Top 1.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

<p>A remote code execution vulnerability exists in Microsoft Exchange server due to improper validation of cmdlet arguments.</p> <p>An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the System user. Exploitation of the vulnerability requires an authenticated user in a certain Exchange role to be compromised.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Exchange handles cmdlet arguments.</p>

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-74CWE-269

Affected Products

Microsoft Exchange ServerMicrosoft Corp
On-prem
Operating Systems
exchange servermicrosoft
On-prem
Operating Systems / windows
Microsoft Exchange Server 2019 Cumulative Update 5Microsoft
On-prem
Operating Systems / windows
Microsoft Exchange Server 2019 Cumulative Update 6Microsoft
On-premWeb App
Enterprise Software / itsm-monitoring
Microsoft Exchange Server 2016 Cumulative Update 16Microsoft
On-prem
Operating Systems / windows
microsoft corpcommercialUSOperating Systemsaka microsoft corporation
microsoftcommercialUSOperating Systems
and 1 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Execution
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16875
portal.msrc.microsoft.com
http://packetstormsecurity.com/files/159210/Microsoft-Exchange-Server-DlpUtils-AddTenantDlpPolicy-Remote-Code-Execution.html
packetstormsecurity.com

Timeline

Published
Sep 11, 2020
Last Updated
Feb 23, 2026

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