What is CVE-2026-105720?

CVE-2026-105720 is a medium-severity vulnerability in Microsoft Sharepoint Server Subscription Edition, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-10-13.

How severe is CVE-2026-105720?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Microsoft Sharepoint Server Subscription Edition

CVE-2026-105720

Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Vulnerability class: Broken Access Control

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Microsoft Sharepoint Server Subscription Edition

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

Microsoft Office SharePoint Elevation of Privilege Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-105720?: CVE-2026-105720 is a medium-severity vulnerability in Microsoft Sharepoint Server Subscription Edition, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-10-13.
How severe is CVE-2026-105720?: Medium severity. CVSS v3 base score is 4.3 out of 10.