Vulnerability Intelligence Report
Skype for Business and Lync Server Denial of Service Vulnerability
CVE-2019-1029
A denial of service vulnerability exists in Skype for Business. An attacker who successfully exploited the vulnerability could cause Skype for Business to stop responding. Note that the denial of service would not allow an attacker to execute code or to elevate the attacker's user rights. To exploit the vulnerability, an attacker needs to obtain a dial-in link for a vulnerable server and then initiates a series of calls within a short amount of time. The update addresses the vulnerability by correcting the way that Skype for Business server handles objects in memory.
No Active Exploit Signals
CVSS Base Score
5.9
MEDIUM
EPSS Probability:5.28%
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
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SSVC Action
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Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Microsoft Lync Server 2010 | 0 < publication (affected) |
| Microsoft | Microsoft Lync Server 2013 | 0 < publication (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
5.281%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2018-11-26T00:00:00 |
| Published | 2019-06-12T13:49:40 |
| Patch Date | 2019-06-11 |
| Last Updated | 2025-05-20T17:49:45 |
Community Chatter & Buzz