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CVE-2026-54111 Microsoft CVE debrief

CVE-2026-54111 is a high-severity vulnerability in the Windows USB Print Driver that allows an authorized attacker to elevate privileges locally due to a race condition. The vulnerability has a CVSS score of 7 and is classified as HIGH. Microsoft is the affected vendor. The vulnerability affects multiple versions of Windows, including Windows 11 and Windows Server 2025. The vulnerability is caused by a concurrent execution using shared resource with improper synchronization, also known as a race condition, in the Windows USB Print Driver. This allows an authorized attacker to elevate privileges locally.

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 are advised to take action as the vulnerability affects multiple versions of Windows. The vulnerability allows an authorized attacker to elevate privileges locally, which can have a significant impact on the security of the system.

Technical summary

The vulnerability is caused by a concurrent execution using shared resource with improper synchronization, also known as a race condition, in the Windows USB Print Driver. This allows an authorized attacker 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. The vulnerability affects Windows 11 and Windows Server 2025 systems.

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 Microsoft
  • Review and update Windows systems to ensure the patch is applied
  • Monitor systems for any suspicious activity
  • 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 2026-07-14T17:17:04.003Z and was last modified on 2026-07-22T16:18:13.380Z. The NVD entry is currently Analyzed. The vulnerability affects Windows 11 and Windows Server 2025 systems. Microsoft has provided a patch for this vulnerability. The CVE record was obtained from the NVD database, which is a comprehensive vulnerability database maintained by the US government. The information provided is based on the data available up to the last modification date.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-54111 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-54111

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

  • CVE-2026-54111 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-54111

    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.