CVE-2026-70217 Microsoft Office SharePoint Information Disclosure Vulnerability
An authorized attacker can disclose sensitive information over the network due to improper access control in Microsoft SharePoint Server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-70217?
CVE-2026-70217 is a medium-severity vulnerability in Microsoft Sharepoint Server, published on 13 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Improper access control in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
Weakness: CWE-284
Which versions are affected by CVE-2026-70217?
It affects 1 product.
Products include Microsoft Sharepoint Server.
How do I fix CVE-2026-70217?
No fix has been published for CVE-2026-70217 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-70217 being exploited?
There is no known exploitation of CVE-2026-70217 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sharepoint Server
- CVE-2026-50522 Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
- CVE-2026-58644 Microsoft SharePoint Deserialization of Untrusted Data
- CVE-2026-20963 Microsoft SharePoint Deserialization of Untrusted Data
- CVE-2025-53770 Microsoft SharePoint Deserialization of Untrusted Data
- CVE-2023-29357 Microsoft SharePoint Server Privilege Escalation
Sources
Also known as GHSA-xw63-c8vr-8cc7.