CVE-2026-33112

Microsoft SharePoint Server Remote Code Execution Vulnerability

State: Published
Severity: 8.8 High
Published: May 12, 2026
Updated: Aug 10, 2026
Reserved: Mar 17, 2026

Description

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Microsoft SharePoint Enterprise Server 2016Microsoft	16.0.0 to before 16.0.5552.1002Affected
Microsoft SharePoint Server 2019Microsoft	16.0.0 to before 16.0.10417.20128Affected
Microsoft SharePoint Server Subscription EditionMicrosoft	16.0.0 to before 16.0.19725.20280Affected

References

Microsoft SharePoint Server Remote Code Execution Vulnerabilityvendor-advisorypatch

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