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Description

Insufficient granularity of access control in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

PUBLISHED Reserved 2026-04-11 | Published 2026-05-12 | Updated 2026-05-20 | Assigner microsoft




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

Problem types

CWE-1220: Insufficient Granularity of Access Control

Product status

16.0.0 (custom) before 16.0.5552.1002
affected

16.0.0 (custom) before 16.0.10417.20128
affected

16.0.0 (custom) before 16.0.19725.20280
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40365 (Microsoft SharePoint Server Remote Code Execution Vulnerability) vendor-advisory patch

cve.org (CVE-2026-40365)

nvd.nist.gov (CVE-2026-40365)

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