CVE-2025-49706
Medium 6.5 Exploited in the wild (KEV) Used in ransomware campaigns
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft SharePoint Improper Authentication Vulnerability
- Added to catalog
- Remediation due date (US federal)
- 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.
Description
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Metrics
- CVSS 3.1
-
6.5 (MEDIUM)
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - EPSS — exploit probability
- 99% (percentile: 100) as of 1 November 2026
- CWE
- CWE-287
Affected products
microsoft: sharepoint enterprise server; microsoft: sharepoint server
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 Vendor Advisory
- https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-expl… Press/Media CoverageVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025… US Government Resource