CVE-2026-50675

HIGH

Microsoft Excel Remote Code Execution Vulnerability

Title source: cna
STIX 2.1

Description

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Microsoft Excel Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50675

Scores

CVSS v3 7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Details

CWE
CWE-122
Status published
Products (9)
Microsoft/Microsoft 365 Apps for Enterprise 16.0.1 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Excel 2016 16.0.0.0 - 16.0.5561.1001
Microsoft/Microsoft Office 2019 19.0.0 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office 365 for Mac 1.0.0 - 16.111.26071215
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 Office LTSC for Mac 2021 16.0.1 - 16.111.26071215
Microsoft/Microsoft Office LTSC for Mac 2024 16.0.0 - 16.111.26071215
Microsoft/Office Online Server 16.0.0.0 - 16.0.10417.20175
Published Jul 14, 2026
Tracked Since Jul 14, 2026