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7.5Alta

CVE-2026-21260Microsoft Outlook Spoofing Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 2019; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024 Publicada: (hace 9 meses)

Descripción

Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.

Debilidad (CWE): CWE-200

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

FabricanteProductoVersiones
microsoft 365 apps 16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 2019 19.0.0 – < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC 2021 16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC 2024 16.0.0 – < https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Outlook 2016 16.0.0.0 – < 16.0.5539.1002
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0 – < 16.0.5539.1002
Microsoft Microsoft SharePoint Server 2019 16.0.0 – < 16.0.10417.20097
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0 – < 16.0.19127.20518
microsoft office 2019
microsoft office 2019 19.0.0 – < https://aka.ms/OfficeSecurityReleases
microsoft office 2021 16.0.1 – < https://aka.ms/OfficeSecurityReleases
microsoft office 2024 16.0.0 – < https://aka.ms/OfficeSecurityReleases
microsoft office long term servicing channel 2021
microsoft outlook 2016
microsoft outlook 2016 16.0.0.0 – < 16.0.5539.1002
microsoft sharepoint server 16.0.0 – < 16.0.19127.20518
microsoft sharepoint server 2016 16.0.0 – < 16.0.5539.1002
microsoft sharepoint server 2019 16.0.0 – < 16.0.10417.20097

Referencias y parches

Coincidencias CPE (NVD) (13)
  • cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
  • cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
  • cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*
  • cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*
  • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x64:*
  • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:-:x86:*
  • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:*
  • cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:*
  • cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:x64:*
  • cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:x86:*
  • cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:* < 16.0.19127.20518
  • cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
  • cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

CVE recientes del mismo producto — Microsoft Office / 365 Apps

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CVE-2026-120003

Microsoft Office Remote Code Execution Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 365 for Mac; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.

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CVE-2026-119999

Microsoft Office Excel Information Disclosure Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 365 for Mac; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

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CVE-2026-119998

Microsoft Office Security Feature Bypass Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Product ui does not warn user of unsafe actions in Microsoft Office allows an unauthorized attacker to bypass a security feature over a network.