CVE-2019-1029 json
Skype for Business and Lync Server Denial of Service Vulnerability
published 2019-06-12 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-9614
- cvss
- 5.9
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.3%
- EPSS 5.3% chance of exploitation in 30 days, percentile 92%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
5.28% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C |
Affected products
- Microsoft Microsoft Lync Server 2010
- Microsoft Microsoft Lync Server 2013
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2019-1029
patch, vendor-advisory
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2019-1029
vendor-advisory
Sources
- CVE List CVE-2019-1029
- NVD CVE-2019-1029
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