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CVE-2026-50471 Microsoft CVE debrief

CVE-2026-50471 is a high-severity vulnerability in Windows NTFS that allows an unauthorized attacker to execute code locally. The vulnerability has a CVSS score of 7.8 and is classified as HIGH. Microsoft has released a patch for this vulnerability, and users are advised to apply it as soon as possible. This vulnerability affects multiple versions of Windows, including Windows 10, Windows 11, and Windows Server. The vulnerability is a heap-based buffer overflow in Windows NTFS, which can be exploited by an unauthorized attacker to execute code locally.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-22
Advisory published
2026-07-14
Advisory updated
2026-07-22

Who should care

Administrators and users of Windows systems, particularly those with high-risk exposure or operating critical infrastructure, should prioritize patching this vulnerability to prevent potential code execution. This includes operators of Windows-based systems, security teams, and vulnerability management teams.

Technical summary

The vulnerability is a heap-based buffer overflow in Windows NTFS. An unauthorized attacker can exploit this vulnerability to execute code locally. The vulnerability affects multiple versions of Windows, including Windows 10, Windows 11, and Windows Server. This vulnerability has a CVSS score of 7.8 and is classified as HIGH.

Defensive priority

High

Recommended defensive actions

  • Apply the patch released by Microsoft
  • Conduct a thorough inventory of Windows systems and prioritize patching based on risk and exposure
  • Implement compensating controls, such as enhanced monitoring and intrusion detection
  • Verify that all affected systems have been patched or mitigated
  • Monitor for suspicious activity and adjust detection rules as needed

Evidence notes

The CVE record was published on 2026-07-14T18:17:52.677Z and last modified on 2026-07-21T03:39:41.190Z. The NVD entry is currently Analyzed. Microsoft has released a patch for this vulnerability. The source detail is limited, and defenders should verify the affected scope and severity with the official advisory.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50471 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50471

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

  • CVE-2026-50471 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50471

    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.