CVE-2026-64921 PUBLISHED

Microsoft SharePoint Server Elevation of Privilege Vulnerability

Assigner: microsoft
Reserved: 20.07.2026 Published: 11.08.2026 Updated: 12.08.2026

Missing authentication for critical function in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS Score: 8.8

Product Status

Vendor Microsoft
Product Microsoft SharePoint Enterprise Server 2016
Versions
  • affected from 16.0.0 to 16.0.5565.1001 (excl.)
Vendor Microsoft
Product Microsoft SharePoint Server 2019
Versions
  • affected from 16.0.0 to 16.0.10417.20198 (excl.)
Vendor Microsoft
Product Microsoft SharePoint Server Subscription Edition
Versions
  • affected from 16.0.0 to 16.0.19725.20522 (excl.)

References

Problem Types