CVE-2026-56164

medium Microsoft ⚠️ CISA KEV — Exploited in the Wild
CVSS v3 Base Score
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Published: July 14, 2026 (54 days ago)
Last Modified: July 14, 2026
Vendor: Microsoft
Source: NVD

⚠️ CISA Known Exploited Vulnerability

Added to KEV: 2026-07-14
Remediation Due: 2026-07-17 (⚠ 52d overdue)

Description

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

CWE

CWE-306

Affected Products

microsoft sharepoint server

References

🔗 msrc.microsoft.com 🔗 www.cisa.gov