7.5

CVE-2026-21511

Microsoft Outlook Spoofing Vulnerability

Deserialization of untrusted data in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ 365 Apps Version - SwEdition enterprise HwPlatform x64
Microsoft ≫ 365 Apps Version - SwEdition enterprise HwPlatform x86
Microsoft ≫ Office Version 2019 HwPlatform x64
Microsoft ≫ Office Version 2019 HwPlatform x86
Microsoft ≫ Office Long Term Servicing Channel Version 2021 SwPlatform - HwPlatform x64
Microsoft ≫ Office Long Term Servicing Channel Version 2021 SwPlatform - HwPlatform x86
Microsoft ≫ Office Long Term Servicing Channel Version 2021 SwPlatform macos
Microsoft ≫ Office Long Term Servicing Channel Version 2024 SwPlatform - HwPlatform x64
Microsoft ≫ Office Long Term Servicing Channel Version 2024 SwPlatform - HwPlatform x86
Microsoft ≫ Office Long Term Servicing Channel Version 2024 SwPlatform macos
Microsoft ≫ Sharepoint Server SwEdition subscription Version < 16.0.19127.20518
Microsoft ≫ Sharepoint Server Version 2016 SwEdition enterprise
Microsoft ≫ Sharepoint Server Version 2019
Microsoft ≫ Word Version 2016 HwPlatform x64
Microsoft ≫ Word Version 2016 HwPlatform x86
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 3.64% 0.884
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-502 Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21511
Vendor Advisory