CVE-2026-54130NVD

Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Severity Level

CRITICAL(9.8)

Published Date

Jun 18, 2026

Last Modified

Jun 18, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

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

CVSS v3.1 Base Metrics

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVE Watchtower