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9.1 Critique Exploitée

CVE-2026-55040 Microsoft SharePoint Weak Authentication Vulnerability

Exploitation active constatée

· catalogue CISA KEV
Action attendue 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.
Campagnes de rançongiciel Non constatée à ce jour
Faiblesse CWE-1390

Description

Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.

Produits et versions touchés

Produit Versions touchées Corrigé en
Microsoft SharePoint Enterprise Server 2016 16.0 16.0.0 → < 16.0.5561.1001 16.0.5561.1001
Microsoft SharePoint Server 2019 16.0 16.0.0 → < 16.0.10417.20175 16.0.10417.20175
Microsoft SharePoint Server Subscription Edition 16.0 16.0.0 → < 16.0.19725.20434 16.0.19725.20434

Références

Chronologie

  1. Publiée
  2. Ajoutée au catalogue KEV
  3. Dernière modification

Autres CVE de Microsoft SharePoint Enterprise Server 2016

Les 337 CVE de Microsoft SharePoint Enterprise Server 2016 →
CVE-2026-97783 Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint… 8.1 Élevée CVE-2026-69943 Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows… 8.8 Élevée CVE-2026-62917 Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a… 4.6 Moyenne CVE-2026-62839 Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing… 6.5 Moyenne
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