CVE-2026-66810
No fix known EPSS <1%CVSS 5.5
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Products: Microsoft 365 Apps for Enterprise, Microsoft Office 2019, Microsoft Office 365 for Mac, Microsoft Office LTSC 2021, Microsoft Office LTSC 2024, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Word 2016