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← All CVEs
CVE Watch—

CVE-2020-17144

Microsoft Exchange Server Remote Code Execution Vulnerability

CVSS

—

No CVSS

EPSS

36.5%

p98

KEV

YES

Nov 3, 2021

Exploit Today

80

0-100

Published: — · Last modified: —

EPSS · 30d
36.5%EPSS · 30 days36.5%
2026-09-172026-10-15
KEV catalog record

Product

Microsoft / Exchange Server

Vulnerability

Microsoft Exchange Server Remote Code Execution Vulnerability

Added to KEV

Nov 3, 2021

Remediate by

May 3, 2022

Known ransomware use

No

Summary description

Microsoft Exchange Server improperly validates cmdlet arguments which allow an attacker to perform remote code execution.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2020-17144

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