---
id: CVE-2025-49706
title: >-
  Improper authentication in Microsoft Office SharePoint allows an unauthorized
  attacker to perform spoofing over a network.
summary: >-
  Improper authentication in Microsoft Office SharePoint allows an unauthorized
  attacker to perform spoofing over a network.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-287
vendor: microsoft
product: sharepoint_enterprise_server
affected:
  - sharepoint_enterprise_server = 2016
  - sharepoint_server < 16.0.18526.20424
  - sharepoint_server = 2019
patched:
  - sharepoint_server 16.0.18526.20424
published: '2025-07-08'
updated: '2026-08-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-49706'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706'
    label: secure@microsoft.com
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.99063
epssPercentile: 0.99932
kev: true
kevDateAdded: '2025-07-22'
kevDueDate: '2025-07-23'
kevRansomware: true
exploited: true
ingestedAt: '2026-08-04T05:36:13.041Z'
exploits:
  github: 1
  githubRepos:
    - >-
      https://github.com/AdityaBhatt3010/CVE-2025-49706-SharePoint-Spoofing-Vulnerability-Under-Active-Exploitation
  metasploit:
    - exploit/windows/http/sharepoint_toolpane_rce
  nuclei:
    - CVE-2025-49706
  checkedAt: '2026-09-21T15:27:26.692Z'
exploitAvailable: true
---

## Overview

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

## Affected

- `sharepoint_enterprise_server = 2016`
- `sharepoint_server < 16.0.18526.20424`
- `sharepoint_server = 2019`

## Remediation

Upgrade past the affected range:

- `sharepoint_server 16.0.18526.20424`