Google: CVE-2026-111497 Buffer overflow vulnerability in the Brotli decoder
CVE-2026-111497
Summary
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Products covered
Microsoft SharePoint Enterprise Server 2016
Microsoft SharePoint Server 2019
Microsoft Office 2019 for 32-bit editions
Microsoft Office 2019 for 64-bit editions
Microsoft 365 Apps for Enterprise for 32-bit Systems
Microsoft 365 Apps for Enterprise for 64-bit Systems
Microsoft Office LTSC for Mac 2021
Microsoft Office LTSC 2021 for 64-bit editions
Show 8 more products
Microsoft Office LTSC 2021 for 32-bit editions
Microsoft SharePoint Server Subscription Edition
Microsoft Office LTSC 2024 for 32-bit editions
Microsoft Office LTSC 2024 for 64-bit editions
Microsoft Office LTSC for Mac 2024
Microsoft Office 2016 (32-bit edition)
Microsoft Office 2016 (64-bit edition)
Microsoft Office 365 for Mac
Remediation
Click to Run Release Notes Install KB5002891. Install KB5002892. Install KB5002883. Install KB5002885. Install KB5002882. Install KB5002887.
Vendor-listed fixes
16.0.5561.1001
16.0.10417.20175
https://aka.ms/OfficeSecurityReleases
16.111.26071215
16.0.19725.20434
16.0.5561.1000
CVEs in this advisory 1
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.