CVE-2017-11786

high Microsoft
CVSS v3 Base Score
8.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score
11.5%
Exploitation probability in 30 days
Top 6% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Published: October 13, 2017 (3135 days ago)
Last Modified: May 13, 2026
Vendor: Microsoft
Source: NVD

Description

Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to steal an authentication hash that can be reused elsewhere, due to how Skype for Business handles authentication requests, aka "Skype for Business Elevation of Privilege Vulnerability."

CWE

CWE-294

Affected Products

microsoft lyncmicrosoft skype for business

References

🔗 www.securityfocus.com 🔗 www.securitytracker.com 🔗 portal.msrc.microsoft.com 🔗 www.securityfocus.com 🔗 www.securitytracker.com