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PatchSiren cyber security CVE debrief

CVE-2026-72952 Microsoft CVE debrief

An out-of-bounds read vulnerability in Windows Spaceport.sys allows an authorized attacker to execute code locally. This issue affects multiple Windows versions, including Windows 10, Windows 11, and Windows Server, and has been addressed by Microsoft. The vulnerability has a CVSS score of 7, indicating high severity. Defenders should assess their exposure and apply patches from Microsoft. The CVE record and NVD detail page provide information on the vulnerability, including its CVSS score and affected Windows versions.

Vendor
Microsoft
Product
Windows 10 Version 1809
CVSS
HIGH 7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-21
Advisory published
2026-09-08
Advisory updated
2026-09-21

Who should care

Defenders responsible for Windows systems, particularly those with high-risk exposure or requiring high assurance, should assess their exposure and apply patches from Microsoft.

Why it matters

CVE-2026-72952 is a high-severity vulnerability in Windows Spaceport.sys that allows authorized attackers to execute code locally. Defenders should assess exposure, apply patches, and monitor for exploitation attempts.

  • Verify patch deployment for affected Windows versions to prevent local code execution
  • Assess exposure for Windows systems and apply compensating controls if necessary
  • Monitor for potential exploitation attempts

Technical summary

The vulnerability is an out-of-bounds read issue in Windows Spaceport.sys, which allows an authorized attacker to execute code locally. The CVSS score for this vulnerability is 7 (High). Affected versions include Windows 10, Windows 11, and Windows Server.

Defensive priority

High

Recommended defensive actions

  • Assess exposure for Windows systems and apply patches from Microsoft
  • Verify affected versions and apply compensating controls if necessary
  • Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, including its CVSS score and affected Windows versions. The vulnerability is an out-of-bounds read issue in Windows Spaceport.sys, which allows an authorized attacker to execute code locally. The official CVE Program record and NVD detail page offer source-provided CVE metadata and source-specific vulnerability assessment. Vendor advisory and patch information is also available. Defenders should verify patch

Sources and references

Verified primary and authoritative sources

  • CVE-2026-72952 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-72952

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

  • CVE-2026-72952 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-72952

    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.