CVE-2026-81385: Microsoft 365 Apps

High severity, CVSS 8.8. EPSS: 1.3% chance of exploitation in the next 30 days.

Deserialization of untrusted data in Microsoft Office Publisher allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft 365 Apps: 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
• Microsoft Publisher: version 2016 only

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