CVE-2020-16875

Microsoft Exchange Server Remote Code Execution Vulnerability

CVE-2020-16875 is fixed in 4 products on 1 platform, first by KB4577352, released September 8, 2020. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
8.4
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.4650
98th percentile

<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>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Microsoft Exchange Server 2016 Cumulative Update 16 KB4577352 Sep 8, 2020
Microsoft Exchange Server 2016 Cumulative Update 17 KB4577352 Sep 8, 2020
Microsoft Exchange Server 2019 Cumulative Update 5 KB4577352 Sep 8, 2020
Microsoft Exchange Server 2019 Cumulative Update 6 KB4577352 Sep 8, 2020

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