CVE-2026-35440: Microsoft 365 Apps

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Affected products

• Microsoft 365 Apps: affected versions not specified
• Microsoft Office: version 2019 only
• Microsoft Office Long Term Servicing Channel: version 2021 only; version 2024 only
• Microsoft Word: version 2016 only

Published 2026-05-12. Last modified 2026-06-17.