Advisoriesby IbisMicrosoftCVE-2026-85908
Microsoft Office 365 for Mac: heap buffer overflow
Fix: upgrade to 16.114.26101123 or later (9 fixed versions below)
Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft Office 365 for Mac Product | >= 1.0.0, < 16.114.26101123 | 16.114.26101123 |
| Microsoft Office LTSC for Mac 2021 Product | >= 16.0.1, < 16.114.26101123 | 16.114.26101123 |
| Microsoft Office LTSC for Mac 2024 Product | >= 16.0.0, < 16.114.26101123 | 16.114.26101123 |
| Microsoft Office for Android Product | >= 16.0.1, < 16.0.20430.20000 | 16.0.20430.20000 |
| Windows 10 Version 1607 Product | >= 10.0.14393.0, < 10.0.14393.9612 | 10.0.14393.9612 |
| Windows 10 Version 1809 Product | >= 10.0.17763.0, < 10.0.17763.9376 | 10.0.17763.9376 |
| Windows 10 Version 21H2 Product | >= 10.0.19044.0, < 10.0.19044.7807 | 10.0.19044.7807 |
| Windows 10 Version 22H2 Product | >= 10.0.19045.0, < 10.0.19045.7807 | 10.0.19045.7807 |
| Windows 11 Version 23H2 Product | >= 10.0.22631.0, < 10.0.22631.7652 | 10.0.22631.7652 |
| Windows 11 Version 24H2 Product | >= 10.0.26100.0, < 10.0.26100.9711 | 10.0.26100.9711 |
| Windows 11 Version 25H2 Product | >= 10.0.26200.0, < 10.0.26200.9711 | 10.0.26200.9711 |
| Windows 11 version 23H2 Product | >= 10.0.22631.0, < 10.0.22631.7652 | 10.0.22631.7652 |