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CVE-2026-50674 Microsoft CVE debrief

CVE-2026-50674 is a high-severity vulnerability in the Windows USB Print Driver, allowing an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7 and is classified as HIGH. This use-after-free issue can be exploited by an attacker with local access to the system. The vulnerability affects Windows 11 and Windows Server 2025 systems. Administrators and users should be aware of this vulnerability and take necessary precautions to mitigate the risk.

Vendor
Microsoft
Product
Windows 11 Version 24H2
CVSS
HIGH 7
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 11 and Windows Server 2025 systems should be aware of this vulnerability and take necessary precautions. This includes reviewing and updating Windows USB Print Driver configurations, monitoring system logs for suspicious activity, and implementing additional security measures to prevent local privilege escalation.

Technical summary

The vulnerability is caused by a use-after-free issue in the Windows USB Print Driver. An authorized attacker can exploit this vulnerability to elevate privileges locally. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. This vulnerability affects Windows 11 and Windows Server 2025 systems.

Defensive priority

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

Recommended defensive actions

  • Apply the patch provided by Microsoft
  • Review and update Windows USB Print Driver configurations
  • 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 CVE record was published on 2026-07-14T18:18:01.670Z and was last modified on 2026-07-22T16:17:18.497Z. The NVD entry is currently Analyzed. This vulnerability affects Windows 11 and Windows Server 2025 systems. The evidence provided is limited, and defenders should verify the affected scope and severity with the vendor. The CVSS score is 7, indicating a high-severity vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50674 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50674

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

  • CVE-2026-50674 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50674

    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.