---
id: CVE-2026-69804
title: >-
  Time-of-check time-of-use (toctou) race condition in Microsoft Office
  SharePoint allows an authorized attacker to execute code over a network.
summary: >-
  Time-of-check time-of-use (toctou) race condition in Microsoft Office
  SharePoint allows an authorized attacker to execute code over a network.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-367
vendor: microsoft
product: sharepoint_server
affected:
  - sharepoint_server < 16.0.20326.20090
patched:
  - sharepoint_server 16.0.20326.20090
published: '2026-09-08'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T17:13:10.243'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69804'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69804'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T04:22:16.560329Z'
epss: 0.00509
epssPercentile: 0.42425
ingestedAt: '2026-09-08T19:08:49.620Z'
---

## Overview

Time-of-check time-of-use (toctou) race condition in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

## Affected

- `sharepoint_server < 16.0.20326.20090`

## Remediation

Upgrade past the affected range:

- `sharepoint_server 16.0.20326.20090`