Microsoft SharePoint Server Spoofing Vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-49706
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-07-08 17:15:58 UTC
Updated2026-08-04 05:16:34 UTC
DescriptionImproper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.998790000 probability, percentile 0.999650000 (date 2026-08-04)

CISA KEV: Listed on 2025-07-22; due 2025-07-23; ransomware use Known

Problem Types: CWE-287 | CWE-287 CWE-287: Improper Authentication

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CISA Known Exploited Vulnerability

VendorMicrosoft
ProductSharePoint
NameMicrosoft SharePoint Improper Authentication Vulnerability
Required ActionDisconnect 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.
NotesCISA 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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Microsoft Sharepoint Enterprise Server 2016 All All All
Application Microsoft Sharepoint Server All All All All
Application Microsoft Sharepoint Server 2019 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft Microsoft SharePoint Enterprise Server 2016 affected 16.0.0 16.0.5508.1000 custom x64-based Systems
CNA Microsoft Microsoft SharePoint Server 2019 affected 16.0.0 16.0.10417.20027 custom x64-based Systems
CNA Microsoft Microsoft SharePoint Server Subscription Edition affected 16.0.0 16.0.18526.20424 custom x64-based Systems

References

ReferenceSourceLinkTags
msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 [email protected] msrc.microsoft.com Vendor Advisory
www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation... 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.microsoft.com Press/Media Coverage, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Additional Advisory Data

SourceTimeEvent
ADP2025-07-22T00:00:00.000ZCVE-2025-49706 added to CISA KEV

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