CVE-2021-26422: Skype for Business and Lync Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 7.2)

CVSS Vector

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

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-May

Released

2021-05-11

EPSS Score

4.37% (percentile: 89.0%)

Affected Products (3)

Microsoft Office

• Microsoft Lync Server 2013 CU10
• Skype for Business Server 2019 CU5
• Skype for Business Server 2015 CU11

Security Updates (3)

• 5003729
• 5003729
• 5003729

Revision History

• 2021-05-11: Information published.