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CVE-2026-48576 Microsoft CVE debrief

CVE-2026-48576 is a protection mechanism failure in Windows Secure Boot, enabling an authorized attacker to bypass a security feature locally. The vulnerability has a CVSS score of 7.9 and is classified as HIGH severity. It was published on 2026-06-09T17:17:46.373Z and modified on 2026-06-10T15:14:17.117Z.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-07-09
Advisory published
2026-06-09
Advisory updated
2026-07-09

Who should care

Administrators and users of affected Microsoft Windows versions should prioritize patching this vulnerability to prevent potential local attacks.

Technical summary

The vulnerability is caused by a protection mechanism failure in Windows Secure Boot, allowing an authorized attacker to bypass a security feature locally. The CVSS vector is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches from Microsoft as soon as possible, especially for affected Windows versions.
  • Review and update Secure Boot configurations to ensure they are properly set up and enforced.
  • Monitor system logs for any suspicious activity related to Secure Boot bypass attempts.

Evidence notes

The CVE record and details are sourced from official databases and vendor advisories.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48576 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48576

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

  • CVE-2026-48576 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48576

    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.