9.8

CVE-2026-78509

Medienbericht

Microsoft Office Outlook Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code 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 ≫ Microsoft 365 Version - SwPlatform macos
Microsoft ≫ Office 2019 Version - HwPlatform x64
Microsoft ≫ Office 2019 Version - HwPlatform x86
Microsoft ≫ Office 2021 Version - SwEdition ltsc SwPlatform - HwPlatform x64
Microsoft ≫ Office 2021 Version - SwEdition ltsc SwPlatform - HwPlatform x86
Microsoft ≫ Office 2021 Version - SwEdition ltsc SwPlatform macos HwPlatform -
Microsoft ≫ Office 2024 Version - SwEdition ltsc SwPlatform - HwPlatform x64
Microsoft ≫ Office 2024 Version - SwEdition ltsc SwPlatform - HwPlatform x86
Microsoft ≫ Office 2024 Version - SwEdition ltsc SwPlatform macos HwPlatform -
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 0.95% 0.593
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

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VulnDex Intel
Media Report
08.09.2026 20:38
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78509
Patch
Vendor Advisory