CVE-2018-8340

moderate-risk
Published 2018-08-15

A security feature bypass vulnerability exists when Active Directory Federation Services (AD FS) improperly handles multi-factor authentication requests, aka "AD FS Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows Server 2012 R2, Windows 10 Servers.

Do I need to act?

!
15.2% chance of exploitation in next 30 days
EPSS score — higher than 85% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Microsoft

References (6)

Third Party Advisory http://www.securityfocus.com/bid/105029
Third Party Advisory http://www.securitytracker.com/id/1041474
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8340
Third Party Advisory http://www.securityfocus.com/bid/105029
Third Party Advisory http://www.securitytracker.com/id/1041474
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8340
47
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 13/34 · Low
Exposure 10/34 · Low