5.5

CVE-2026-21258

Microsoft Excel Information Disclosure Vulnerability

Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
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 ≫ Excel Version 2016 HwPlatform x64
Microsoft ≫ Excel Version 2016 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 ≫ Office Online Server Version < 16.0.10417.20097
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.6% 0.438
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

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.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21258
Vendor Advisory