What’s Vulnerable › Vulnerabilities

CVE-2019-0975

• Severity: medium (CVSS 6.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-07-15 · updated 2026-06-17

Description

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., aka 'ADFS Security Feature Bypass Vulnerability'. This CVE ID is unique from CVE-2019-1126.

Affected products

• Microsoft Windows Server 2016: 1803, 1903
• Microsoft Windows Server 2019: all versions
• Microsoft Windows Server: 2016, 2016 (Core installation), version 1803 (Core Installation), 2019, 2019 (Core installation)
• Microsoft Windows Server, version 1903 (Server Core installation): all versions

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0975
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0975

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