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CVE-2019-1126

UnknownEPSS 4.95%

Last modified

CVE-2019-1126 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.95% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
4.95%

91.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MicrosoftWindows Server 2012r2
MicrosoftWindows Server 2016All versions
MicrosoftWindows Server 20161803
MicrosoftWindows Server 20161903
MicrosoftWindows Server 2019All versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-1126?
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.
How severe is CVE-2019-1126?
Severity scoring for CVE-2019-1126 is pending analysis. The EPSS model estimates a 4.95% probability of exploitation in the next 30 days.
How do I fix CVE-2019-1126?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-1126?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST