Disclosure summary
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Source-reported weakness categories
CWE-122
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Aug
Open original source · Updated Aug 11, 2026
Microsoft Office Word Remote Code Execution Vulnerability
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 7.8
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | Microsoft Office 2019 for 32-bit editions | (MSRC status code 3) |
| Microsoft update guide | Microsoft Office 2019 for 64-bit editions | (MSRC status code 3) |
| Microsoft update guide | Microsoft 365 Apps for Enterprise for 32-bit Systems | (MSRC status code 3) |
| Microsoft update guide | Microsoft 365 Apps for Enterprise for 64-bit Systems | (MSRC status code 3) |
| Microsoft update guide | Microsoft Office LTSC for Mac 2021 | (MSRC status code 3) |
| Microsoft update guide | Microsoft Office LTSC 2021 for 64-bit editions | (MSRC status code 3) |
| Microsoft update guide | Microsoft Office LTSC 2021 for 32-bit editions | (MSRC status code 3) |
| Microsoft update guide | Microsoft Office LTSC 2024 for 32-bit editions | (MSRC status code 3) |
| Microsoft update guide | Microsoft Office LTSC 2024 for 64-bit editions | (MSRC status code 3) |
| Microsoft update guide | Microsoft Office LTSC for Mac 2024 | (MSRC status code 3) |
| Microsoft update guide | Microsoft Word 2016 (32-bit edition) | (MSRC status code 3) |
| Microsoft update guide | Microsoft Word 2016 (64-bit edition) | (MSRC status code 3) |
| Microsoft update guide | Microsoft Office 365 for Mac | (MSRC status code 3) |
Vendor remediation references
- Click to Run · build https://aka.ms/OfficeSecurityReleases · product IDs 11573, 11574, 11762, 11763, 11952, 11953, 12420, 12421
- Vendor guidance · product IDs 11573, 11574, 11762, 11763, 11952, 11953, 12420, 12421
- Release Notes · build 16.112.26081010 · product IDs 11951, 12440
- Vendor guidance · product IDs 11951, 12440
- 5002901 · build 16.0.5565.1000 · product IDs 10746, 10747
- Vendor guidance · product IDs 10746, 10747
- Release Notes · build 16.112.26081010 · product IDs 21368
- Vendor guidance · product IDs 21368
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-08-11T03:00:00-04:00
MODIFIED 2026-08-11T03:00:00-04:00
INGESTED 2026-10-08T12:40:36-04:00