What is CVE-2026-70217?

CVE-2026-70217 is a medium-severity vulnerability in Microsoft Sharepoint Server Subscription Edition, classified under Improper Access Control. CVSS score: 4.9/10. Published 2026-10-13.

How severe is CVE-2026-70217?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Vulnerability in Microsoft Sharepoint Server Subscription Edition

CVE-2026-70217

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

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

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/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-284 — Improper Access Control

References

Microsoft Office SharePoint Information Disclosure Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-70217?: CVE-2026-70217 is a medium-severity vulnerability in Microsoft Sharepoint Server Subscription Edition, classified under Improper Access Control. CVSS score: 4.9/10. Published 2026-10-13.
How severe is CVE-2026-70217?: Medium severity. CVSS v3 base score is 4.9 out of 10.