CVE-2025-49706 (GCVE-0-2025-49706)

Vulnerability from cvelistv5 – Published: 2025-07-08 16:58 – Updated: 2025-10-21 22:45
VLAI? CISA KEV
Title
Microsoft SharePoint Server Spoofing Vulnerability
Summary
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft SharePoint Enterprise Server 2016 Affected: 16.0.0 , < 16.0.5508.1000 (custom)
Create a notification for this product.
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 61fea7b3-3a63-4920-b93e-5c1ec4799886

Vulnerability ID: CVE-2025-49706

Status: Confirmed

Status Updated: 2025-07-22 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-07-22
Asserted: 2025-07-22
Scope
Notes: KEV entry: Microsoft SharePoint Improper Authentication Vulnerability | Affected: Microsoft / SharePoint | Description: Microsoft SharePoint contains an improper authentication vulnerability that allows an authorized attacker to perform spoofing over a network. Successfully exploitation could allow an attacker to view sensitive information and make some changes to disclosed information. This vulnerability could be chained with CVE-2025-49704. CVE-2025-53771 is a patch bypass for CVE-2025-49706, and the updates for CVE-2025-53771 include more robust protection than those for CVE-2025-49706. | Required action: Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available. | Due date: 2025-07-23 | Known ransomware campaign use (KEV): Known | Notes (KEV): CISA Mitigation Instructions: https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770 ; https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/ ; https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 ; https://nvd.nist.gov/vuln/detail/CVE-2025-49706
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-287
Feed CISA Known Exploited Vulnerabilities Catalog
Product SharePoint
Due Date 2025-07-23
Date Added 2025-07-22
Vendorproject Microsoft
Vulnerabilityname Microsoft SharePoint Improper Authentication Vulnerability
Knownransomwarecampaignuse Known
References
Created: 2026-02-02 12:25 UTC | Updated: 2026-02-06 07:17 UTC
Show details on NVD website
To clipboard 

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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.