Microsoft Office Word Remote Code Execution Vulnerability
CVE-2026-108432 · published 15 Oct 2026
How serious is it
- Severity: high, CVSS score 8.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-108432?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Microsoft Microsoft 365 Apps for Enterprise: 16.0.1 to < https://aka.ms/OfficeSecurityReleases
- Microsoft Microsoft Office 365 for Mac: 1.0.0 to < 16.114.26101123
- Microsoft Microsoft Office LTSC 2021: 16.0.1 to < 16.0.14334.20974
- Microsoft Microsoft Office LTSC 2024: 16.0.0 to < 16.0.17932.21056
- Microsoft Microsoft Office LTSC for Mac 2021: 16.0.1 to < 16.114.26101123
- Microsoft Microsoft Office LTSC for Mac 2024: 16.0.0 to < 16.114.26101123
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
Merged from CVE List. Last updated 23 Oct 2026. All vulnerabilities · RSS · JSON