CVE-2021-24099
Skype for Business and Lync Denial of Service Vulnerability
MEDIUM
6.5
CVSS Score
Published: February 25, 2021 at 11:01 PM UTC
Updated: June 17, 2026 at 03:39 AM UTC
2 products affected across 1 vendorSkype for Business ServerLync Server
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Severity
MEDIUM6.5
Exploit prediction
EPSS 3%
Description
Skype for Business and Lync Denial of Service Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < publication2013
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24099CVSS
6.5MEDIUMmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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