Main Vulnerability Database Vulnerabilities #VU46470

Improper Authentication in Microsoft Windows and Windows Server - CVE-2020-0837

Published: September 8, 2020

Vulnerability identifier: #VU46470

CSH Severity: Medium

CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-0837

CWE-ID: CWE-287

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing multi-factor authentication requests in Active Directory Federation Services (ADFS). A remote attacker can bypass certain authentication factors and gain unauthorized access to the application.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2020-0837

Install updates from vendor's website.

External References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0837

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