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CVE-2026-71341 Microsoft CVE debrief

CVE-2026-71341 is a MEDIUM-severity vulnerability in the Windows Partition Management Driver, classified under CWE-125, allowing an authorized attacker to disclose information locally with a CVSS score of 5.5. Microsoft has released a patch, and Windows system administrators and security teams should assess exposure and apply patches. The vulnerability is an out-of-bounds read issue, and its exploitation requires local access. The CVE record was published on 2026-09-08T18:20:14.057Z. Vulnerability details are sourced from the CVE Program and NVD, providing information on affected systems and CVSS scores.

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
2026-09-15
Advisory published
2026-09-08
Advisory updated
2026-09-15

Who should care

Windows system administrators, security teams, and operators of Windows Partition Management Driver should assess exposure and apply patches. This vulnerability allows local information disclosure, and patching is required to prevent exploitation. Inventory and verification of Windows systems are necessary to ensure the vulnerability is addressed.

Why it matters

CVE-2026-71341 is a MEDIUM-severity vulnerability that allows local information disclosure. Windows system administrators and security teams should assess exposure and apply patches.

  • Local information disclosure possible
  • Patching required to prevent exploitation
  • Inventory and verification of Windows systems necessary

Technical summary

CVE-2026-71341 is an out-of-bounds read vulnerability in the Windows Partition Management Driver. An authorized attacker can exploit this vulnerability to disclose information locally. The vulnerability has a CVSS score of 5.5 and is classified under CWE-125. Microsoft has released a patch for this vulnerability, and Windows system administrators and security teams should assess exposure and apply patches.

Defensive priority

Apply patches for CVE-2026-71341 to prevent local information disclosure

Recommended defensive actions

  • Apply patches for CVE-2026-71341
  • Inventory Windows systems for exposure
  • Verify local access controls

Evidence notes

The CVE record (CVE-2026-71341) and NVD vulnerability detail provide information on the vulnerability, its CVSS score of 5.5, and affected systems. The vulnerability is classified under CWE-125. Microsoft has released a patch for this vulnerability. Defensive verification tasks include reviewing the official advisory, validating affected scope and severity, and planning vendor-supported updates.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-71341 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-71341

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

  • CVE-2026-71341 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-71341

    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.