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MEDIUM · 5.4

CVE-2026-56157

Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Vulnerability Description

Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
MicrosoftSharepoint Server< 16.0.19725.20434

Related Weaknesses (CWE)

CWE-284

References

FAQ

What is CVE-2026-56157?

CVE-2026-56157 is a vulnerability with a CVSS score of 5.4 (MEDIUM). Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

How severe is CVE-2026-56157?

CVE-2026-56157 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-56157?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Sharepoint Server.