CVE-2025-49706: CWE-287: Improper Authentication in Microsoft Microsoft SharePoint Enterprise Server 2016
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2025-49706) in Microsoft SharePoint Enterprise Server 2016 involves improper authentication (CWE-287), which could allow an attacker to spoof identities over a network. The flaw affects version 16.0.0 of the product. Microsoft has published an official fix to remediate this security issue. The CVSS 3.1 base score is 6.5, indicating a medium severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact includes limited confidentiality and integrity loss without availability impact. No known exploits are reported in the wild at this time.
Potential Impact
An attacker exploiting this vulnerability could perform spoofing attacks on the affected SharePoint server, potentially leading to unauthorized access or impersonation. The impact is limited to confidentiality and integrity loss, with no impact on availability. No active exploitation has been reported.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 to remediate this vulnerability.
CVE-2025-49706: CWE-287: Improper Authentication in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-49706) in Microsoft SharePoint Enterprise Server 2016 involves improper authentication (CWE-287), which could allow an attacker to spoof identities over a network. The flaw affects version 16.0.0 of the product. Microsoft has published an official fix to remediate this security issue. The CVSS 3.1 base score is 6.5, indicating a medium severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact includes limited confidentiality and integrity loss without availability impact. No known exploits are reported in the wild at this time.
Potential Impact
An attacker exploiting this vulnerability could perform spoofing attacks on the affected SharePoint server, potentially leading to unauthorized access or impersonation. The impact is limited to confidentiality and integrity loss, with no impact on availability. No active exploitation has been reported.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-06-09T19:59:44.875Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706","vendor":"Microsoft"}]
Threat ID: 686d50d66f40f0eb72f91c66
Added to database: 07/08/2025, 17:09:42 UTC
Last enriched: 08/04/2026, 13:22:39 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 130
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.