CVE Watch4 de ago. de 2026

CVE-2025-49706

Microsoft SharePoint Improper Authentication Vulnerability

CVSS

6.5

Média

EPSS

99.1%

p100

KEV

SIM

22 de jul. de 2025

Exploit Today

0-100

Publicado: 8 de jul. de 2025 · Última mod.: 4 de ago. de 2026 · CWE-287

EPSS · 30d

99.1%EPSS · 30 dias99.1%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

Microsoft / SharePoint

Vulnerabilidade

Microsoft SharePoint Improper Authentication Vulnerability

Adicionado ao KEV

22 de jul. de 2025

Corrigir até

23 de jul. de 2025

Uso conhecido em ransomware

Sim

Descrição resumida

Microsoft SharePoint contains an improper authentication vulnerability that allows an authorized attacker to perform spoofing over a network. Successfully exploitation could allow an attacker to view sensitive information and make some changes to disclosed information. This vulnerability could be chained with CVE-2025-49704. CVE-2025-53771 is a patch bypass for CVE-2025-49706, and the updates for CVE-2025-53771 include more robust protection than those for CVE-2025-49706.

Ação necessária

Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

Notas

CISA Mitigation Instructions: https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770 ; https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/ ; https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 ; https://nvd.nist.gov/vuln/detail/CVE-2025-49706

Descrição técnica

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Referências oficiais

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