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CVE-2026-45468 Microsoft CVE debrief

CVE-2026-45468 is a MEDIUM-severity vulnerability (CVSS score of 4.6) affecting Microsoft Office SharePoint. The vulnerability involves improper neutralization of input during web page generation, allowing an authorized attacker to perform spoofing over a network. The vulnerability was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-45468) on 2026-06-09T17:17:21.340Z and last modified on 2026-06-10T20:21:03.393Z. For more information, refer to the [NVD detail page](https://nvd.nist.gov/vuln/detail/CVE-2026-45468). Microsoft has provided a [Vendor Advisory](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45468) for this vulnerability.

Vendor
Microsoft
Product
Microsoft SharePoint Enterprise Server 2016
CVSS
MEDIUM 4.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-11
Advisory published
2026-06-09
Advisory updated
2026-06-11

Who should care

Administrators and users of Microsoft Office SharePoint should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by improper neutralization of input during web page generation, allowing an authorized attacker to inject malicious scripts and perform spoofing attacks.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or updates provided by Microsoft to fix the vulnerability.
  • Implement proper input validation and sanitization to prevent script injection attacks.
  • Monitor SharePoint usage and logs for suspicious activity.

Evidence notes

The vulnerability is confirmed by Microsoft and has a CVSS score of 4.6, indicating a MEDIUM severity level.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45468 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45468

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

  • CVE-2026-45468 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45468

    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.