CVE-2026-70105: Microsoft 365

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

Affected products

• Microsoft Microsoft 365: affected versions not specified
• Microsoft Office: version 2019 only
• Microsoft Office 2021: affected versions not specified
• Microsoft Office 2024: affected versions not specified
• Microsoft Word: version 2016 only

Published 2026-08-20. Last modified 2026-09-04.