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CVE-2026-50450 Microsoft CVE debrief

CVE-2026-50450 is a high-severity vulnerability in Windows Wireless Wide Area Network Service that allows an authorized attacker to elevate privileges locally. The vulnerability is caused by a race condition, which occurs when multiple processes try to access a shared resource simultaneously without proper synchronization. This vulnerability affects Windows operating systems and has a high CVSS score of 7.8. The Common Vulnerabilities and Exposures (CVE) record for this vulnerability was published on 2026-07-14T18:17:49.633Z and was last modified on 2026-07-21T16:49:07.487Z.

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
2026-07-22
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 its effects. Affected operators should review vendor guidance and implement compensating controls for exposed systems. Vulnerability management and security teams should prioritize patching and monitoring for potential attacks.

Technical summary

The vulnerability is caused by a race condition in the Windows Wireless Wide Area Network Service. This condition allows an authorized attacker to elevate privileges locally. The Common Vulnerabilities and Exposures (CVE) score for this vulnerability is 7.8, indicating a high severity level. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Defensive priority

High

Recommended defensive actions

  • Apply the patch provided by Microsoft to fix the vulnerability.
  • Ensure that all Windows operating systems are up-to-date with the latest security patches.
  • Implement additional security measures, such as monitoring and incident response planning, to detect and respond to potential attacks.
  • 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 2026-07-14T18:17:49.633Z and was last modified on 2026-07-21T16:49:07.487Z. The NVD entry is currently Analyzed. This vulnerability affects Windows operating systems and allows an authorized attacker to elevate privileges locally. The CVE score for this vulnerability is 7.8, indicating a high severity level. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H. There are no known exploits in the wild, but defenders should verify affected scope and vendor guidance.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50450 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50450

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

  • CVE-2026-50450 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50450

    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.