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PatchSiren cyber security CVE debrief

CVE-2026-45655 Microsoft CVE debrief

CVE-2026-45655 is a protection mechanism failure in Windows BitLocker that allows an unauthorized attacker to bypass a security feature with a physical attack. The vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. It was published on 2026-06-09T17:17:32.587Z and modified on 2026-06-11T18:48:49.223Z.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-11
Advisory published
2026-06-09
Advisory updated
2026-06-11

Who should care

Users of Windows BitLocker should be aware of this vulnerability and take necessary precautions to prevent unauthorized access.

Technical summary

The vulnerability is caused by a protection mechanism failure in Windows BitLocker, which allows an unauthorized attacker to bypass a security feature with a physical attack. The CVSS vector is CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

Defensive priority

High

Recommended defensive actions

  • Apply the patch from Microsoft as soon as possible.
  • Use secure protocols for BitLocker.
  • Monitor for suspicious activity.

Evidence notes

The vulnerability is confirmed by Microsoft and has been analyzed by NVD.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-45655 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-45655

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

  • CVE-2026-45655 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-45655

    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.