CVE-2017-11786

moderate-risk
Published 2017-10-13

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."

Do I need to act?

!
11.5% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Microsoft

References (6)

Third Party Advisory http://www.securityfocus.com/bid/101156
Third Party Advisory http://www.securitytracker.com/id/1039530
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-1178...
Third Party Advisory http://www.securityfocus.com/bid/101156
Third Party Advisory http://www.securitytracker.com/id/1039530
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-1178...
48
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 11/34 · Low
Exposure 7/34 · Low