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PatchSiren cyber security CVE debrief

CVE-2026-48583 Microsoft CVE debrief

CVE-2026-48583 is a use-after-free vulnerability in the Windows Kernel. An authorized attacker can exploit this vulnerability to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-10
Advisory published
2026-06-09
Advisory updated
2026-06-10

Who should care

Administrators and users of Microsoft Windows operating systems should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by a use-after-free error in the Windows Kernel. 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.

Defensive priority

High

Recommended defensive actions

  • Apply patches from Microsoft as soon as possible.
  • Review and update Windows operating systems to the latest versions.

Evidence notes

The vulnerability is confirmed by Microsoft and has been documented in the NVD database.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48583 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48583

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

  • CVE-2026-48583 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48583

    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.