CVE-2026-33112: Microsoft SharePoint Server Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Other sources
Microsoft SharePoint Server Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20128Patch KB5002870 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5552.1002Patch KB5002868 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.19725.20280Patch KB5002863
Event History
Frequently Asked Questions
What is the severity of CVE-2026-33112?
CVE-2026-33112 is classified as a critical severity vulnerability due to its ability to allow remote code execution.
How do I fix CVE-2026-33112?
To fix CVE-2026-33112, apply the latest security updates and patches provided by Microsoft for the affected SharePoint Server versions.
Which versions of SharePoint are affected by CVE-2026-33112?
CVE-2026-33112 affects Microsoft SharePoint Server Subscription Edition, SharePoint Server 2019, and SharePoint Enterprise Server 2016.
What type of attack does CVE-2026-33112 facilitate?
CVE-2026-33112 facilitates remote code execution attacks by allowing unauthorized code execution over a network.
Who can exploit CVE-2026-33112?
An authorized attacker with access to Microsoft SharePoint Server can exploit CVE-2026-33112 to execute arbitrary code.