7.8

CVE-2026-55899

Medienbericht

Microsoft Excel Remote Code Execution Vulnerability

Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft365 Apps Version- SwEditionenterprise HwPlatformx64
Microsoft365 Apps Version- SwEditionenterprise HwPlatformx86
MicrosoftExcel Version2016 HwPlatformx64
MicrosoftExcel Version2016 HwPlatformx86
MicrosoftMicrosoft 365 Version- SwPlatformmacos
MicrosoftOffice 2019 Version- HwPlatformx64
MicrosoftOffice 2019 Version- HwPlatformx86
MicrosoftOffice 2021 Version- SwEditionltsc SwPlatform- HwPlatformx64
MicrosoftOffice 2021 Version- SwEditionltsc SwPlatform- HwPlatformx86
MicrosoftOffice 2021 Version- SwEditionltsc SwPlatformmacos HwPlatform-
MicrosoftOffice 2024 Version- SwEditionltsc SwPlatform- HwPlatformx64
MicrosoftOffice 2024 Version- SwEditionltsc SwPlatform- HwPlatformx86
MicrosoftOffice 2024 Version- SwEditionltsc SwPlatformmacos HwPlatform-
MicrosoftOffice Online Server Version < 16.0.10417.20175
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.3% 0.223
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-121 Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

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VulnDex Intel
Media Report
14.07.2026 20:08
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55899
Patch
Vendor Advisory