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PatchSiren cyber security CVE debrief

CVE-2026-69390 Microsoft CVE debrief

CVE-2026-69390 is a MEDIUM-severity vulnerability in Windows Spaceport.sys that allows an authorized attacker to disclose information locally. The vulnerability has a CVSS score of 5.5 and is classified as CWE-125. Microsoft has released a patch for this vulnerability. System administrators and security teams responsible for Windows systems should assess exposure and apply patches to prevent local information disclosure. The CVE record and NVD vulnerability detail page provide information about the vulnerability, including its CVSS score and CWE classification.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-17
Advisory published
2026-09-08
Advisory updated
2026-09-17

Who should care

System administrators and security teams responsible for Windows systems should assess exposure and apply patches to prevent local information disclosure.

Why it matters

CVE-2026-69390 is a MEDIUM-severity vulnerability in Windows Spaceport.sys that allows an authorized attacker to disclose information locally. System administrators and security teams should assess exposure and apply patches to prevent local information disclosure.

  • Local information disclosure may occur if the vulnerability is exploited
  • System administrators must apply patches to prevent exploitation
  • Security teams should review system logs for potential exploitation attempts

Technical summary

CVE-2026-69390 is a MEDIUM-severity vulnerability in Windows Spaceport.sys that allows an authorized attacker to disclose information locally. The vulnerability has a CVSS score of 5.5 and is classified as CWE-125. Microsoft has released a patch for this vulnerability. The vulnerability can be exploited by an authorized attacker to disclose information locally, and system administrators and security teams should assess exposure and apply patches to prevent local information disclosure.

Defensive priority

Apply patches for CVE-2026-69390 to prevent local information disclosure

Recommended defensive actions

  • Apply patches for CVE-2026-69390 to prevent local information disclosure
  • Review system logs for potential exploitation attempts
  • Ensure that Windows Spaceport.sys is updated to the latest version

Evidence notes

The CVE record and NVD vulnerability detail page provide information about the vulnerability, including its CVSS score and CWE classification. Microsoft has released a patch for this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-69390 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-69390

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

  • CVE-2026-69390 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-69390

    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.