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 addres
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…
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows Server | 2016, 2016 (Core installation), version 1803 (Core Installation), 2019, 2019 (Core installation) |
| Microsoft | Windows Server, version 1903 (Server Core installation) | unspecified |
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
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No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.