PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-47298 Microsoft CVE debrief

CVE-2026-47298 is a HIGH severity vulnerability in Microsoft Office SharePoint. The vulnerability is caused by improper authorization, allowing an authorized attacker to execute code over a network. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 8. The vulnerability affects Microsoft SharePoint Server, specifically versions 2016, 2019, and Subscription.

Vendor
Microsoft
Product
Microsoft SharePoint Enterprise Server 2016
CVSS
HIGH 8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-12
Advisory published
2026-06-09
Advisory updated
2026-06-12

Who should care

Administrators and users of Microsoft Office SharePoint Server, particularly those using versions 2016, 2019, and Subscription.

Technical summary

The vulnerability is caused by improper authorization in Microsoft Office SharePoint, allowing an authorized attacker to execute code over a network. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Defensive priority

HIGH

Recommended defensive actions

  • Apply the patches provided by Microsoft to fix the vulnerability.
  • Restrict access to sensitive areas of the SharePoint Server to only authorized users.
  • Monitor SharePoint Server logs for suspicious activity.

Evidence notes

The vulnerability is analyzed and has a CWE-285 weakness.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-47298 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-47298

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-47298 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-47298

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.