Microsoft 365 Apps for Enterprise vulnerability

Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.

Published 13 Oct 2026Updated 16 Oct 20261 sources
CVSS 8.8

What happened

Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.

Affected versions

Microsoft 365 Apps for Enterprise: 16.0.1 through before https://aka.ms/OfficeSecurityReleases (custom) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.