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

7.2HIGH

Key Information:

Vendor
Microsoft
Status
Microsoft Lync Server 2013 Cu10
Skype For Business Server 2019 Cu5
Skype For Business Server 2015 Cu11
Vendor
CVE Published:
11 May 2021

Summary

Skype for Business and Lync Remote Code Execution Vulnerability

Affected Version(s)

Microsoft Lync Server 2013 CU10 Unknown 8308.0 < 8308.1144

Skype for Business Server 2015 CU11 Unknown 2015 CU11 < 9319.606

Skype for Business Server 2019 CU5 Unknown 1.0 < 2046.369

References

https://portal.msrc.microsoft.com/en-US/security-guidance...
x_refsource_MISC

EPSS Score

1% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Collectors

NVD DatabaseMitre Database
.