CVE-2026-50387

HIGH

Microsoft Office 365 for Mac - Windows GDI Elevation of Privilege Vulnerability

Title source: rule
STIX 2.1

Description

Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows GDI Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50387

Scores

CVSS v3 7.8
EPSS 0.0192
EPSS Percentile 77.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (41)
microsoft/365_copilot
Microsoft/Microsoft Office 365 for Mac 1.0.0 - 16.111.26071215
Microsoft/Microsoft Office for Android 16.0.1 - 16.0.20228.20042
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/microsoft_365
microsoft/office_2021
microsoft/office_2024
Microsoft/Windows 10 Version 1607 10.0.14393.0 - 10.0.14393.9339
Microsoft/Windows 10 Version 1809 10.0.17763.0 - 10.0.17763.9020
... and 31 more
Published Jul 14, 2026
Tracked Since Jul 14, 2026