Skype for Business and Microsoft Lync
CVE-2019-1209 — Lync 2013 Information Disclosure Vulnerability
Executive Summary
An information disclosure vulnerability exists in Lync 2013. An attacker who exploited it could read arbitrary files on the victim's machine. To exploit the vulnerability, an attacker needs to instantiate a conference and modify the meeting link with malicious content and send the link to a victim. The update addresses the vulnerability by changing how the URL is being resolved.
Overview
6.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
EPSS Score
0.06201
probability of exploitation in the next 30 days
0.92763 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
1 affected product
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft Lync Server 2013 | 4515509 (Security Update) |
Important | Information Disclosure | Maybe |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
4515509 |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Ahmed Aaish (iqzer0) at Parallel Security Solutions
References
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