Microsoft Windows
CVE-2019-0975 — ADFS Security Feature Bypass Vulnerability
Executive Summary
A security feature bypass vulnerability exists when Active Directory Federation Services (ADFS) improperly updates its list of banned IP addresses. To exploit this vulnerability, an attacker would have to convince a victim ADFS administrator to update the list of banned IP addresses. This security update corrects how ADFS updates its list of banned IP addresses.
Overview
4.3
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
High
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 3.9
EPSS Score
0.01821
probability of exploitation in the next 30 days
0.75956 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
6 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows Server 2016 | 4507460 (Security Update) |
Important | Security Feature Bypass | Yes |
| Windows Server 2016 (Server Core installation) | 4507460 (Security Update) |
Important | Security Feature Bypass | Yes |
| Windows Server 2019 | 4507469 (Security Update) |
Important | Security Feature Bypass | Yes |
| Windows Server 2019 (Server Core installation) | 4507469 (Security Update) |
Important | Security Feature Bypass | Yes |
| Windows Server, version 1803 (Server Core Installation) | 4507435 (Security Update) |
Important | Security Feature Bypass | Yes |
| Windows Server, version 1903 (Server Core installation) | 4507453 (Security Update) |
Important | Security Feature Bypass | Yes |
Patches
4 patches
| Article | Type | Restart |
|---|---|---|
4507460 |
Security Update | Yes |
4507469 |
Security Update | Yes |
4507435 |
Security Update | Yes |
4507453 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Mike Crowley , Baseline Technologies
References
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