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CISA Known Exploited Vulnerabilities

Microsoft Exchange Server Validation Key Remote Code Execution Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV
2021-11-03
Remediation due
2022-05-03
Ransomware
Known use

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2020-0688

Description

A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Memory Corruption Vulnerability'.

Severity

CVSS 3.1 · CISA8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC · CISA-ADP
Exploitationactive
Automatableno
Technical impacttotal

Affected Products

VendorProductAffected versions
MicrosoftMicrosoft Exchange Server 2013
Cumulative Update 23
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 3
unspecified
MicrosoftMicrosoft Exchange Server 2016 Cumulative Update 14
unspecified
MicrosoftMicrosoft Exchange Server 2016 Cumulative Update 15
unspecified
MicrosoftMicrosoft Exchange Server 2019 Cumulative Update 4
unspecified
MicrosoftMicrosoft Exchange Server 2010 Service Pack 3 Update Rollup 30
unspecified

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.