CVE-2026-70267 Microsoft Office SharePoint Remote Code Execution Vulnerability
An authorized attacker can execute arbitrary code on Microsoft SharePoint Server by exploiting untrusted control sphere inclusion.
- 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-2026-70267?
CVE-2026-70267 is a high-severity code injection 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
Inclusion of functionality from untrusted control sphere in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Weakness: CWE-829
Which versions are affected by CVE-2026-70267?
It affects 1 product.
Products include Microsoft Sharepoint Server.
How do I fix CVE-2026-70267?
No fix has been published for CVE-2026-70267 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-70267 being exploited?
There is no known exploitation of CVE-2026-70267 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-fhf9-5vh6-5m4g.