Main Vulnerability Database Vulnerabilities #VU57314

Security features bypass in Windows Server - CVE-2021-40456

Published: October 12, 2021

Vulnerability identifier: #VU57314

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2021-40456

CWE-ID: CWE-254

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Microsoft

Affected software:
Windows Server

Detailed vulnerability description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to security feature bypass issue in Windows AD FS. A remote attacker can gain access to encrypted data.

Install updates from vendor's website.