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CVE-2026-56155

Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability .

Microsoft · Active Directory Federation Services

Exploitabilité (EPSS)
0.3 %
percentile mondial 28
Sévérité (CVSS)
·
non noté
Ajoutée au KEV
14 juil. 2026
échéance CISA · 28 juil. 2026
Description

Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally.

Action requise (CISA)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Familles de faiblesses
CWE-1220 · CWE-1220
Signal de priorisation (d’inspiration SSVC)
Examiner
Exploitation
Active (catalogue KEV)
Automatisable
Inconnu
Impact technique
Inconnu

Une orientation, pas une décision : le 4ᵉ facteur SSVC (impact mission/société) dépend du contexte de votre organisation. Méthode ↗

Autres vulnérabilités exploitées · Microsoft
CVE-2021-34473 100% CVE-2019-0708 100% CVE-2015-1635 100% CVE-2025-53770 100% CVE-2021-26855 100% CVE-2025-49704 100%
NVD ↗ CVE.org ↗ CISA KEV ↗