CVE-2025-49706
mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.991 · 100 %ileexploit · weaponizedDEEUNLRUUSadded 2025-07-22remediate by 2025-07-23
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.
EPSS · scored 2026-10-24
Microsoft SharePoint Improper Authentication Vulnerability
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedMicrosoft SharePoint Enterprise Server 2016msrc_csaf
16.0.5508.1000:Security Update:https://support.microsoft.com/help/5002744
https://support.microsoft.com/help/5002744 - FixedMicrosoft SharePoint Server 2019msrc_csaf
16.0.10417.20027:Security Update:https://support.microsoft.com/help/5002741
https://support.microsoft.com/help/5002741 - FixedMicrosoft SharePoint Server Subscription Editionmsrc_csaf
16.0.18526.20424:Security Update:https://support.microsoft.com/help/5002751
https://support.microsoft.com/help/5002751
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
ATT&CK techniques
ATT&CK techniques this enables or maps to.
exploits (2)
Public proof-of-concept and weaponised exploit code.
affected products (56)
Products and version ranges known to be affected.
- Microsoft SharePoint Enterprise Server 2016all versionscert_bundDEcpe:/a:microsoft:sharepoint:enterprise_server_2016
- Microsoft SharePoint Server Subscription Editionall versionscert_bundDEcpe:/a:microsoft:sharepoint:server_subscription_edition
advisories (3)
Vendor and ecosystem advisories describing this.
- NCSC-2025-0215Kwetsbaarheden verholpen in Microsoft OfficeNL2025-07-08csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in diverse Office producten.
- WID-SEC-W-2025-1491Microsoft Office: Mehrere SchwachstellenDeutsch2025-07-08csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer oder ein lokaler Angreifer kann mehrere Schwachstellen in Microsoft Excel 2016, Microsoft PowerPoint 2016, Microsoft Word 2016, Microsoft Office 2016, Microsoft Outlook 2016, Microsoft Office Online Server, Microsoft SharePoint, Microsoft Office 2019, Microsoft SharePoint Server 2019, Microsoft 365 Apps, Microsoft Teams und Microsoft Office ausnutzen, um Administratorrechte zu erlangen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen und Spoofing-Angriffe durchzuführen.
- msrc_CVE-2025-49706Microsoft SharePoint Server Spoofing Vulnerability2025-07-08csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-49706cnnvd
- https://vigilance.fr/vulnerability/Microsoft-SharePoint-vulnerabilities-of-July-2025-47655cnnvd
- https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706enisa_euvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706Vendor Advisorynvd
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706US Government Resourcenvd
- https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/Press/Media CoverageVendor Advisorynvd
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