CVE-2026-70276: Microsoft 365 Apps for Enterprise 16.0.1 to before https://aka.ms/OfficeSecurityReleases; +2 more affected products

Affected technology

Microsoft 365 Apps for Enterprise · 16.0.1 to before https://aka.ms/OfficeSecurityReleases
Microsoft

Microsoft Office LTSC 2021 · 16.0.1 to before 16.0.14334.20974
Microsoft

Microsoft Office LTSC 2024 · 16.0.0 to before 16.0.17932.21056
Microsoft

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

The source says use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally. Vendor/CNA’s CVSS 3.1 assessment (base score 7.0/10) rates confidentiality, integrity and availability impact as high.