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CVE-2026-50479 Microsoft CVE debrief

CVE-2026-50479 is a HIGH severity vulnerability in Windows USB Hub Driver. The vulnerability is caused by an untrusted pointer dereference, which allows an authorized attacker to elevate privileges locally. The CVSS score for this vulnerability is 7.8. This vulnerability affects Windows systems and could allow an attacker with local access to gain elevated privileges. Administrators should be aware of this vulnerability and take necessary precautions to mitigate the risk. The CVE record was published on 2026-07-14T18:17:53.857Z and was last modified on 2026-07-17T05:16:39.800Z.

Vendor
Microsoft
Product
Windows 10 Version 1809
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-21
Advisory published
2026-07-14
Advisory updated
2026-07-21

Who should care

Administrators and users of Windows systems should be aware of this vulnerability and take necessary precautions to mitigate the risk. This includes applying patches provided by the vendor and reviewing system logs for suspicious activity. Additionally, implementing additional security controls to prevent local privilege escalation can help reduce the risk associated with this vulnerability.

Technical summary

The vulnerability is caused by an untrusted pointer dereference in the Windows USB Hub Driver. This allows an authorized attacker to elevate privileges locally. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. The Windows USB Hub Driver does not properly validate user input, allowing an attacker to exploit this vulnerability.

Defensive priority

High priority should be given to patching this vulnerability, as it allows for local privilege escalation.

Recommended defensive actions

  • Apply the patch provided by the vendor
  • Review system logs for suspicious activity
  • Implement additional security controls to prevent local privilege escalation
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record was published on 2026-07-14T18:17:53.857Z and was last modified on 2026-07-17T05:16:39.800Z. The NVD entry is currently Awaiting Analysis. The vulnerability has been reported to be caused by an untrusted pointer dereference in the Windows USB Hub Driver, but further details are limited. Defenders should verify the affected scope, severity, and vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50479 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50479

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

  • CVE-2026-50479 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50479

    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.