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CVE-2026-49802 Microsoft CVE debrief

CVE-2026-49802 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. This vulnerability is caused by improper synchronization in the Windows USB Print Driver, leading to a race condition that can be exploited by an authorized attacker to gain elevated privileges locally. The Common Vulnerabilities and Exposures (CVE) score is 7, indicating a high severity level. The vulnerability affects multiple versions of Windows 11 and Windows Server 2025. System administrators and security teams should prioritize patching this vulnerability to prevent local privilege escalation. Evidence is limited, and defenders should verify system configurations and patch levels to ensure protection.

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

System administrators and security teams responsible for Windows systems, especially those with high-privilege access, should prioritize patching this vulnerability to prevent local privilege escalation.

Technical summary

The vulnerability is caused by a race condition in the Windows USB Print Driver, which allows an authorized attacker to elevate privileges locally. The Common Vulnerabilities and Exposures (CVE) score is 7, indicating a high severity level. The vulnerability is tracked as CVE-2026-49802 and affects multiple versions of Windows 11 and Windows Server 2025.

Defensive priority

High

Recommended defensive actions

  • Apply the patch provided by Microsoft to fix the vulnerability.
  • Conduct a thorough inventory of Windows systems to identify those that may be affected.
  • Implement compensating controls, such as monitoring and exception tracking, to detect potential exploitation attempts.
  • Verify that all affected systems have been patched or mitigated.

Evidence notes

The CVE record was published on 2026-07-14T17:16:56.520Z and was last modified on 2026-07-16T15:37:48.430Z. The NVD entry is currently Analyzed. The vulnerability affects multiple versions of Windows 11 and Windows Server 2025. Evidence is limited, and defenders should verify system configurations and patch levels to ensure protection.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-49802 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-49802

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

  • CVE-2026-49802 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-49802

    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.