---
id: "CVE-2026-120000"
page: "https://infrastack.ai/live/CVE-2026-120000"
kind: "vulnerability"
aliases: ["CVE-2026-120000"]
title: "Microsoft SharePoint: untrusted data deserialization lets an authorized user run code"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["on-prem", "sharepoint", "vendor", "windows"]
not_affected_if: ["sharepoint-online"]
published_at: "2026-11-10T19:20:25+00:00"
first_seen_at: "2026-11-10T19:25:07+00:00"
updated_at: "2026-11-10T19:44:24+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-120000", "first_seen_at": "2026-11-10T19:25:07+00:00"}]
exploit_sources: []
---

# Microsoft SharePoint: untrusted data deserialization lets an authorized user run code

Link for people: https://infrastack.ai/live/CVE-2026-120000 (this .md is for agents)

Microsoft SharePoint deserializes untrusted data without proper checks, so an attacker with a valid account can run code over the network. The attacker gets code execution on the server that hosts the affected SharePoint component.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-10T19:25:07+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-120000

## From the sources

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

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_