CVE-2019-1126

Description

A security feature bypass vulnerability exists in Active Directory Federation Services (ADFS) which could allow an attacker to bypass the extranet lockout policy.To exploit this vulnerability, an attacker could run a specially crafted application, which would allow an attacker to launch a password brute-force attack or cause account lockouts in Active Directory.This security update corrects how ADFS handles external authentication requests., aka 'ADFS Security Feature Bypass Vulnerability'. This CVE ID is unique from CVE-2019-0975.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.54% Top 20%
Vendor Advisory microsoft.com
Affected: Microsoft Windows Server
Affected: Microsoft Windows Server, version 1903 (Server Core installation)
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1126 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-1126?
CVE-2019-1126 has been scored as a medium severity vulnerability.
How to fix CVE-2019-1126?
To fix CVE-2019-1126, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-1126 being actively exploited in the wild?
It is possible that CVE-2019-1126 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-1126?
CVE-2019-1126 affects Microsoft Windows Server, Microsoft Windows Server, version 1903 (Server Core installation).
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