Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability

CVE-2026-56164 Medium CVSS 5.3 In-The-Wild Exploited
Beranda Advisories CVE-2026-56164

Ringkasan Kerentanan (Vulnerability Overview)

Rilis: 01 October 2026
Microsoft SharePoint contains a missing authentication for critical function vulnerability that allows an unauthorized attacker to elevate privileges over a network.

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
Microsoft SharePoint Enterprise Server 2016 16.0.0 16.0.5561.1001 AFFECTED
Microsoft SharePoint Server 2019 16.0.0 16.0.10417.20175 AFFECTED
Microsoft SharePoint Server Subscription Edition 16.0.0 16.0.19725.20434 AFFECTED

Threat Intelligence Matrix

CVE Identifier
CVE-2026-56164
Vendor / Project Microsoft
Produk Terdampak SharePoint Server
Skor CVSS
5.3 / 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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