CVE-2026-56164 — MEDIUM (5.3)

Q: What is CVE-2026-56164?

CVE-2026-56164 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.

Q: How severe is CVE-2026-56164?

CVE-2026-56164 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-56164?

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

Vulnerability Description

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

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Microsoft	Sharepoint Server	< 16.0.19725.20434

Related Weaknesses (CWE)

CWE-306

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56164Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-US Government Resource

FAQ

What is CVE-2026-56164?

CVE-2026-56164 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.

How severe is CVE-2026-56164?

CVE-2026-56164 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-56164?

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