CVE-2026-70313: Microsoft 365 Apps

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.

Affected products

  • Microsoft 365 Apps: affected versions not specified
  • Microsoft Microsoft 365: affected versions not specified
  • Microsoft Office 2019: affected versions not specified
  • Microsoft Office 2021: affected versions not specified
  • Microsoft Office 2024: affected versions not specified

Published 2026-08-11. Last modified 2026-08-14.