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CVE-2026-66804NVD

Vulnerability Summary

Improper access control in Windows Cross Device Service allows an authorized attacker to elevate privileges locally.

Severity Level

HIGH(7.8)

Published Date

Aug 11, 2026

Last Modified

Aug 14, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

3.42%Probability

Root Weakness (CWE)

CWE-284: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

External References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66804

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