Vulnerability Intelligence Report
Skype for Business and Lync Denial of Service Vulnerability
CVE-2021-24099
Skype for Business and Lync Denial of Service Vulnerability
No Active Exploit Signals
CVSS Base Score
6.5
MEDIUM
Exploitability:2.9
Impact Score:3.6
EPSS Probability:2.89%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Skype for Business Server 2019 CU2 | 7.0.0 < publication (affected) |
| Microsoft | Skype for Business Server 2015 CU 8 | 2015 CU 8 < publication (affected) |
| Microsoft | Microsoft Lync Server 2013 | 0 < publication (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
2.887%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2021-01-13T00:00:00 |
| Published | 2021-02-25T23:01:51 |
| Patch Date | 2021-02-09 |
| Last Updated | 2024-08-03T19:21:18 |
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