CVE-2021-41350: Microsoft Exchange Server Spoofing Vulnerability

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Category

Spoofing

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Oct

Released

2021-10-12

EPSS Score

4.47% (percentile: 89.1%)

Affected Products (4)

Server Software

• Microsoft Exchange Server 2016 Cumulative Update 21
• Microsoft Exchange Server 2019 Cumulative Update 10
• Microsoft Exchange Server 2019 Cumulative Update 11
• Microsoft Exchange Server 2016 Cumulative Update 22

Security Updates (4)

• 5007012
• 5007012
• 5007012
• 5007012

Acknowledgments

Diamond Chen

Revision History

• 2021-10-12: Information published.