CVE-2019-1029

MEDIUM

Lync Server - Denial of Service via Dial-in Link Call Flood

Title source: llm
STIX 2.1

Description

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.

Scores

CVSS v3 5.9
EPSS 0.0528
EPSS Percentile 91.7%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (2)
microsoft/lync_server 2010
microsoft/lync_server 2013
Published Jun 12, 2019
Tracked Since Feb 18, 2026