CVE-2021-24099

MEDIUM

Skype for Business and Lync Server - Denial of Service

Title source: llm

Skype for Business and Lync Denial of Service Vulnerability

Core 1

Core References

Patch, Vendor Advisory x_refsource_misc

CVSS v3 6.5

EPSS 0.0289

EPSS Percentile 85.4%

Attack Vector NETWORK

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

Status published

Products (3)

microsoft/lync_server 2013

microsoft/skype_for_business_server 2015 cu8

microsoft/skype_for_business_server 2019 cu2

Published Feb 25, 2021

Tracked Since Feb 18, 2026