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CVE-2026-56182 Microsoft CVE debrief

CVE-2026-56182 is an integer overflow or wraparound vulnerability in Windows NTFS that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. This vulnerability affects Windows operating systems and has been documented in the CVE record and the NVD detail page. Microsoft has provided a patch for the vulnerability. System administrators and users of Windows operating systems should be aware of this vulnerability and take necessary precautions to mitigate the risk. The vulnerability is caused by an integer overflow or wraparound in the Windows NTFS component.

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

System administrators and users of Windows operating systems should be aware of this vulnerability and take necessary precautions to mitigate the risk. This includes reviewing compensating controls for exposed systems, monitoring system logs for suspicious activity, and implementing additional security measures to prevent local privilege escalation. Affected operator, platform, vulnerability-management, and security-team impact should be considered.

Technical summary

The vulnerability is caused by an integer overflow or wraparound in the Windows NTFS component. This allows an authorized attacker to elevate privileges locally. The vulnerability has been assigned a CVSS score of 7.8 and is classified as HIGH severity. Affected product deployments should be identified, and owners assigned for follow-up. Official advisories and CVE records should be reviewed to validate affected scope, severity, and vendor guidance.

Defensive priority

High

Recommended defensive actions

  • Apply the patch provided by Microsoft
  • Ensure that all Windows operating systems are up-to-date
  • Monitor system logs for suspicious activity
  • Implement additional security measures to prevent local privilege escalation
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The vulnerability is documented in the CVE record and the NVD detail page. Microsoft has provided a patch for the vulnerability. Evidence is limited, and defenders should verify affected scope and vendor guidance. The CVE record was published on 2026-07-14T18:18:25.010Z and has not been modified since then. The NVD entry is currently Analyzed. Additional verification is required to confirm affected product deployments and exposure.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-56182 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-56182

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

  • CVE-2026-56182 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-56182

    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.