Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability

CVE-2026-56155 High CVSS 7.8 In-The-Wild Exploited
Beranda Advisories CVE-2026-56155

Ringkasan Kerentanan (Vulnerability Overview)

Rilis: 01 October 2026
Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally.

Tindakan Mitigasi yang Wajib Diterapkan (Required Action)

Instruksi Keamanan untuk Pengelola TI / OPD
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.

Seluruh pengelola server dan aplikasi di lingkungan OPD Kabupaten Ciamis diimbau untuk segera mengaudit perangkat terdampak dan mengaplikasikan patch sebelum batas waktu mitigasi.

Produk & Versi Terdampak

Produk Versi Basis Batas Terdampak Status Keamanan
Windows 10 Version 1607 10.0.14393.0 10.0.14393.9339 AFFECTED
Windows 10 Version 1809 10.0.17763.0 10.0.17763.9020 AFFECTED
Windows Server 2012 6.2.9200.0 6.2.9200.26226 AFFECTED
Windows Server 2012 (Server Core installation) 6.2.9200.0 6.2.9200.26226 AFFECTED
Windows Server 2012 R2 6.3.9600.0 6.3.9600.23291 AFFECTED
Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 6.3.9600.23291 AFFECTED
Windows Server 2016 10.0.14393.0 10.0.14393.9339 AFFECTED
Windows Server 2016 (Server Core installation) 10.0.14393.0 10.0.14393.9339 AFFECTED
Windows Server 2019 10.0.17763.0 10.0.17763.9020 AFFECTED
Windows Server 2019 (Server Core installation) 10.0.17763.0 10.0.17763.9020 AFFECTED

Threat Intelligence Matrix

CVE Identifier
CVE-2026-56155
Vendor / Project Microsoft
Produk Terdampak Active Directory Federation Services
Skor CVSS
7.8 / 10.0
Status Eksploitasi AKTIF (In-The-Wild)
Kampanye Ransomware Tidak Diketahui
Automatable (Wormable) Unknown
Dampak Teknis Total
Sumber Intelijen CISA KEV

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