CVE-2021-24099: Skype for Business and Lync Denial of Service Vulnerability

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

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

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Feb

Released

2021-02-09

EPSS Score

6.33% (percentile: 91.0%)

Affected Products (3)

Microsoft Office

• Skype for Business Server 2019 CU2
• Skype for Business Server 2015 CU 8
• Microsoft Lync Server 2013

Security Updates (3)

• 5000675
• 5000675
• 5000675

Acknowledgments

Markus Wulftange of Code White GmbH (@codewhitesec)

Revision History

• 2021-02-09: Information published.