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CVE-2026-56164

Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability.

Microsoft · SharePoint Server

Exploitabilité (EPSS)
1 %
percentile mondial 63
Sévérité (CVSS)
·
non noté
Ajoutée au KEV
14 juil. 2026
échéance CISA · 17 juil. 2026
Description

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

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-306 · Authentification manquante
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 ↗