VULNERABILITY INTELLIGENCE
CVE-2017-11786
CVSS score8.8 HIGH
EPSS probability9.39%
CISA KEVNot currently listed
Published2017-10-13
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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."
Weakness classification
- CWE-294: Authentication Bypass by Capture-replay
Primary references
- secure@microsoft.com — Third Party Advisory, VDB Entry
- secure@microsoft.com — Third Party Advisory, VDB Entry
- secure@microsoft.com — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory