Exploited Vulnerabilities DailyCVE-2026-56155: Microsoft Active Directory Federation Services
EPSS0.3%No. 1733 of 1739 in KEV
CVE year2026listed the same year
Same vendor in KEV389
Same product1
| Field | Value |
|---|---|
| Vendor | Microsoft |
| Product | Active Directory Federation Services |
| Name | Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability |
| Added to KEV | 2026-07-14 |
| US federal due date | 2026-07-28 |
| Ransomware use | Unknown |
| CWE | CWE-1220 |
CISA description
Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally.
Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page
A Microsoft Active Directory Federation Services vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2026-07-14.